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Unified Betting Aggregation Platform for Multi-Operator Bookmaker Integration

Built a sophisticated multi-operator betting aggregation platform that streamlines interactions with multiple bookmaker services, enabling players to compare real-time odds, calculate payouts, and access betting markets across several providers through a single unified interface.

Client
Belgian iGaming Company
Timeline
9+ months
Team Size
12 developers
Tech Stack
11 technologies
Unified Betting Aggregation Platform for Multi-Operator Bookmaker Integration

The Challenge

The client sought to disrupt the fragmented bookmaker experience by building a multi-operator trading floor where players could compare real-time odds, calculate payouts, and access betting markets across several providers through a single login account. The goal was to reduce friction in onboarding, streamline betting flows, and centralize wallet and KYC without redirecting users away from the core interface.

The Solution

Delivered a fully custom platform with microservices architecture, real-time odds aggregation from multiple bookmaker feeds, seamless one-click registration and fund management across providers, intelligent offer matching, and a responsive React-based UI that works flawlessly on both desktop and mobile browsers.

Technologies Used

React Java Spring Boot Node.js AWS PostgreSQL Redis Kafka Microservices Docker Kubernetes

Results & Impact

Swift platform launch with targeted user testing
Wide adoption across multiple countries and languages
Clean, well-structured UI for simultaneous multi-provider betting
Seamless integration with external bookmaker APIs
High-throughput odds ingestion without blocking UI

Client Context

A Belgian-based company in the online betting and gaming sector — with a strong focus on regulatory compliance, user engagement, fraud prevention, and cybersecurity — commissioned a custom solution to streamline interactions with multiple bookmaker services and present players with the best betting opportunities across partnered providers.

Industry Overview

Industry: iGaming & Sports Betting
Delivery: Full-stack Web & Mobile Platform
Engagement Duration: 9+ months

The betting landscape is fragmented, with players needing multiple accounts across different bookmakers to access the best odds and markets. This creates friction in:

  • Account management and KYC verification
  • Fund transfers between platforms
  • Comparing odds and finding value bets
  • Managing multiple logins and sessions

Business Need

The client sought to disrupt the fragmented bookmaker experience by building a multi-operator trading floor of sorts: a platform where players could:

Core Requirements

Unified Experience:

  • Compare real-time odds across multiple bookmakers
  • Calculate optimal payouts automatically
  • Access betting markets from several providers
  • All through a single login account

Seamless Operations:

  • Reduce friction in user onboarding
  • Streamline betting flows and decision-making
  • Centralize wallet and KYC management
  • Eliminate redirects to external bookmaker sites

Technical Excellence:

  • Real-time data synchronization
  • High-performance odds comparison
  • Secure multi-provider integration
  • Regulatory compliance across markets

Business Impact:

  • Increase player engagement and retention
  • Reduce user acquisition costs
  • Improve conversion rates
  • Enable rapid market expansion

Technical Solution

To satisfy high performance, scalability, and security requirements, we delivered a fully custom platform leveraging the following key architectural and technical decisions:

Modern Scalable Architecture

Microservices Architecture

The Approach:

Back-end decomposition into discrete services using Java and Spring Boot to isolate business domains:

  • Odds Ingestion Service - Real-time feed processing from multiple bookmakers
  • Payout Calculation Service - Complex betting calculations and optimization
  • User Account Management - Centralized identity and KYC
  • Wallet Service - Multi-currency fund management
  • Bet Placement Service - Order routing to appropriate providers
  • Risk Management Service - Fraud detection and compliance

Architecture Diagram:

┌────────────────────────────────────────┐
│     React.js Frontend (Web/Mobile)     │
└──────────────┬─────────────────────────┘

        ┌──────▼──────┐
        │  API Gateway │
        └──────┬───────┘

    ┌──────────┴─────────────┐
    │                        │
┌───▼────────────┐   ┌──────▼──────────┐
│  Odds Service  │   │  Betting Service│
│  (Real-time)   │   │  (Multi-provider)│
└───┬────────────┘   └──────┬──────────┘
    │                       │
┌───▼────────────┐   ┌──────▼──────────┐
│ Redis Cache    │   │ Wallet Service  │
│ (Odds store)   │   │ (Fund mgmt)     │
└────────────────┘   └──────┬──────────┘

                     ┌──────▼──────────┐
                     │ PostgreSQL DB   │
                     └─────────────────┘

Benefits:

  • Horizontal scaling - Each service scales independently
  • Independent deployment - Deploy updates without system downtime
  • Technology flexibility - Use best tool for each domain
  • Team autonomy - Teams work on services independently

Spring Boot Service Example:

@RestController
@RequestMapping("/api/odds")
public class OddsController {
    
    @Autowired
    private OddsAggregationService oddsService;
    
    @Autowired
    private CacheManager cacheManager;
    
    /**
     * Get aggregated odds from multiple bookmakers for a specific event
     */
    @GetMapping("/event/{eventId}")
    public ResponseEntity<AggregatedOdds> getEventOdds(
        @PathVariable String eventId,
        @RequestParam(required = false) List<String> providers
    ) {
        // Check cache first for performance
        AggregatedOdds cachedOdds = cacheManager.get(eventId);
        if (cachedOdds != null && !cachedOdds.isStale()) {
            return ResponseEntity.ok(cachedOdds);
        }
        
        // Fetch and aggregate odds from multiple providers
        AggregatedOdds odds = oddsService.aggregateOdds(eventId, providers);
        
        // Cache with short TTL for real-time accuracy
        cacheManager.put(eventId, odds, Duration.ofSeconds(5));
        
        return ResponseEntity.ok(odds);
    }
    
    /**
     * Get best available odds across all providers
     */
    @GetMapping("/best/{eventId}/{marketType}")
    public ResponseEntity<BestOdds> getBestOdds(
        @PathVariable String eventId,
        @PathVariable MarketType marketType
    ) {
        BestOdds bestOdds = oddsService.findBestOdds(eventId, marketType);
        return ResponseEntity.ok(bestOdds);
    }
}

@Service
public class OddsAggregationService {
    
    @Autowired
    private List<BookmakerApiClient> bookmakerClients;
    
    /**
     * Aggregate odds from multiple bookmakers in parallel
     */
    public AggregatedOdds aggregateOdds(String eventId, List<String> providers) {
        List<CompletableFuture<OddsResponse>> futures = bookmakerClients.stream()
            .filter(client -> providers == null || providers.contains(client.getProviderId()))
            .map(client -> CompletableFuture.supplyAsync(() -> 
                fetchWithTimeout(client, eventId)
            ))
            .collect(Collectors.toList());
        
        // Wait for all responses with timeout
        List<OddsResponse> responses = futures.stream()
            .map(future -> future.join())
            .filter(Objects::nonNull)
            .collect(Collectors.toList());
        
        // Normalize and merge odds
        return normalizeAndMerge(responses);
    }
    
    /**
     * Find best odds across providers using intelligent scoring
     */
    public BestOdds findBestOdds(String eventId, MarketType marketType) {
        AggregatedOdds allOdds = aggregateOdds(eventId, null);
        
        return allOdds.getMarkets().stream()
            .filter(market -> market.getType() == marketType)
            .flatMap(market -> market.getSelections().stream())
            .max(Comparator.comparing(Selection::getOdds))
            .map(selection -> new BestOdds(selection, eventId, marketType))
            .orElse(null);
    }
    
    private OddsResponse fetchWithTimeout(BookmakerApiClient client, String eventId) {
        try {
            return client.getOdds(eventId);
        } catch (Exception e) {
            // Circuit breaker pattern - log and continue
            logger.warn("Failed to fetch odds from {}: {}", 
                client.getProviderId(), e.getMessage());
            return null;
        }
    }
}

Frontend Built with React.js

Implementation:

Highly responsive and dynamic UI components allowed real-time odds displays, comparison tables, and interactive betting flows that adjusted seamlessly to both desktop and mobile browsers.

Key Features:

  • Real-time odds updates via WebSocket
  • Responsive design for all devices
  • Interactive bet slip with live calculations
  • Advanced filtering and sorting
  • Multi-provider comparison views

React Component Example:

// Real-time odds comparison component
interface OddsComparisonProps {
  eventId: string;
  marketType: MarketType;
}

const OddsComparison: React.FC<OddsComparisonProps> = ({ eventId, marketType }) => {
  const [odds, setOdds] = useState<AggregatedOdds | null>(null);
  const [loading, setLoading] = useState(true);
  const wsRef = useRef<WebSocket | null>(null);
  
  // Establish WebSocket connection for real-time updates
  useEffect(() => {
    const ws = new WebSocket(`wss://api.betting.com/odds/${eventId}`);
    
    ws.onmessage = (event) => {
      const updatedOdds = JSON.parse(event.data);
      setOdds(updatedOdds);
      setLoading(false);
    };
    
    ws.onerror = (error) => {
      console.error('WebSocket error:', error);
      // Fallback to polling
      startPolling();
    };
    
    wsRef.current = ws;
    
    return () => {
      ws.close();
    };
  }, [eventId]);
  
  if (loading) return <LoadingSpinner />;
  if (!odds) return <ErrorMessage message="Unable to load odds" />;
  
  // Find best odds across all providers
  const bestSelection = odds.markets
    .find(m => m.type === marketType)
    ?.selections.reduce((best, current) => 
      current.odds > best.odds ? current : best
    );
  
  return (
    <div className="odds-comparison">
      <h3>Best Odds: {bestSelection?.provider}</h3>
      <div className="odds-value highlight">
        {bestSelection?.odds.toFixed(2)}
      </div>
      
      <table className="odds-table">
        <thead>
          <tr>
            <th>Provider</th>
            <th>Odds</th>
            <th>Potential Payout</th>
            <th>Action</th>
          </tr>
        </thead>
        <tbody>
          {odds.markets
            .find(m => m.type === marketType)
            ?.selections.map(selection => (
              <tr 
                key={selection.provider}
                className={selection === bestSelection ? 'best-odds' : ''}
              >
                <td>
                  <img src={`/logos/${selection.provider}.png`} alt={selection.provider} />
                  {selection.provider}
                </td>
                <td className="odds-cell">
                  {selection.odds.toFixed(2)}
                  {selection.isUpdated && <span className="updated-indicator"></span>}
                </td>
                <td>€{calculatePayout(selection.odds, 10).toFixed(2)}</td>
                <td>
                  <button 
                    onClick={() => placeBet(selection)}
                    className="btn-place-bet"
                  >
                    Place Bet
                  </button>
                </td>
              </tr>
            ))}
        </tbody>
      </table>
      
      <BetSlip selections={selectedBets} />
    </div>
  );
};

// Intelligent bet slip with multi-provider support
const BetSlip: React.FC<{ selections: Selection[] }> = ({ selections }) => {
  const [stake, setStake] = useState<number>(10);
  const [betType, setBetType] = useState<'single' | 'accumulator'>('single');
  
  const totalOdds = betType === 'accumulator'
    ? selections.reduce((acc, sel) => acc * sel.odds, 1)
    : selections[0]?.odds || 1;
  
  const potentialReturn = stake * totalOdds;
  const potentialProfit = potentialReturn - stake;
  
  const handlePlaceBet = async () => {
    try {
      const response = await fetch('/api/bets', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          selections: selections.map(s => ({
            provider: s.provider,
            eventId: s.eventId,
            selection: s.id,
            odds: s.odds
          })),
          stake,
          betType
        })
      });
      
      if (response.ok) {
        toast.success('Bet placed successfully!');
        clearBetSlip();
      }
    } catch (error) {
      toast.error('Failed to place bet');
    }
  };
  
  return (
    <div className="bet-slip">
      <h3>Bet Slip</h3>
      
      <div className="bet-selections">
        {selections.map(sel => (
          <div key={sel.id} className="selection-item">
            <span>{sel.name}</span>
            <span className="odds">@ {sel.odds.toFixed(2)}</span>
            <span className="provider">{sel.provider}</span>
          </div>
        ))}
      </div>
      
      <div className="bet-type-selector">
        <button 
          onClick={() => setBetType('single')}
          className={betType === 'single' ? 'active' : ''}
        >
          Single
        </button>
        <button 
          onClick={() => setBetType('accumulator')}
          className={betType === 'accumulator' ? 'active' : ''}
        >
          Accumulator
        </button>
      </div>
      
      <div className="stake-input">
        <label>Stake (€)</label>
        <input 
          type="number" 
          value={stake}
          onChange={(e) => setStake(parseFloat(e.target.value))}
          min="1"
        />
      </div>
      
      <div className="bet-summary">
        <div className="summary-row">
          <span>Total Odds:</span>
          <span className="value">{totalOdds.toFixed(2)}</span>
        </div>
        <div className="summary-row">
          <span>Potential Return:</span>
          <span className="value">€{potentialReturn.toFixed(2)}</span>
        </div>
        <div className="summary-row highlight">
          <span>Potential Profit:</span>
          <span className="value">€{potentialProfit.toFixed(2)}</span>
        </div>
      </div>
      
      <button 
        onClick={handlePlaceBet}
        className="btn-place-bet-primary"
        disabled={selections.length === 0}
      >
        Place Bet
      </button>
    </div>
  );
};

Cloud-Ready Infrastructure

Deployment:

Deployed onto AWS, taking advantage of managed services for fault tolerance and auto-scaling across global regions.

AWS Services Used:

  • ECS/EKS - Container orchestration
  • RDS - Managed PostgreSQL databases
  • ElastiCache - Redis for caching and real-time data
  • CloudFront - CDN for static assets
  • Route 53 - DNS and traffic management
  • CloudWatch - Monitoring and alerting
  • S3 - Object storage for assets

Infrastructure Benefits:

  • Multi-region deployment for low latency
  • Automatic failover and disaster recovery
  • Scalable infrastructure that grows with demand
  • Cost optimization through auto-scaling

Real-Time Odds & Offer Comparison

Multiple Bookmaker Feed Integration

The Challenge:

Integrated multiple bookmaker feeds into a normalized data layer that updates odds with minimal latency.

Technical Implementation:

@Service
public class OddsFeedService {
    
    @Autowired
    private KafkaTemplate<String, OddsUpdate> kafkaTemplate;
    
    @Autowired
    private RedisTemplate<String, AggregatedOdds> redisTemplate;
    
    /**
     * Process incoming odds feed from bookmaker
     * Asynchronous processing to avoid blocking
     */
    @Async
    public void processOddsFeed(String providerId, OddsFeed feed) {
        try {
            // Normalize odds format across providers
            List<OddsUpdate> updates = feed.getEvents().stream()
                .map(event -> normalizeOdds(providerId, event))
                .collect(Collectors.toList());
            
            // Publish to Kafka for distributed processing
            updates.forEach(update -> 
                kafkaTemplate.send("odds-updates", update.getEventId(), update)
            );
            
            // Update Redis cache for fast retrieval
            updates.forEach(update -> {
                String key = String.format("odds:%s", update.getEventId());
                redisTemplate.opsForValue().set(key, update, Duration.ofSeconds(30));
            });
            
            logger.info("Processed {} odds updates from {}", 
                updates.size(), providerId);
                
        } catch (Exception e) {
            logger.error("Failed to process odds feed from {}: {}", 
                providerId, e.getMessage());
            // Circuit breaker - alert operations team
            alertService.sendAlert(AlertLevel.HIGH, 
                "Odds feed failure", providerId);
        }
    }
    
    /**
     * Normalize odds from different provider formats
     */
    private OddsUpdate normalizeOdds(String providerId, ProviderEvent event) {
        return OddsUpdate.builder()
            .eventId(event.getId())
            .provider(providerId)
            .sport(event.getSport())
            .timestamp(Instant.now())
            .markets(event.getMarkets().stream()
                .map(market -> normalizeMarket(market))
                .collect(Collectors.toList()))
            .build();
    }
}

/**
 * Kafka consumer for aggregating odds updates
 */
@Component
public class OddsAggregationConsumer {
    
    @KafkaListener(topics = "odds-updates", groupId = "odds-aggregator")
    public void consumeOddsUpdate(ConsumerRecord<String, OddsUpdate> record) {
        OddsUpdate update = record.value();
        
        // Aggregate with existing odds from other providers
        AggregatedOdds aggregated = aggregateWithExisting(update);
        
        // Broadcast to connected WebSocket clients
        webSocketService.broadcastOddsUpdate(update.getEventId(), aggregated);
        
        // Store in database for historical analysis
        oddsRepository.save(update);
    }
}

Intelligent Offer Matching

The Solution:

Built intelligent matching and scoring logic to present the best available offers across providers, improving player decision velocity.

Scoring Algorithm:

@Service
public class OfferScoringService {
    
    /**
     * Score and rank offers across multiple dimensions
     */
    public List<ScoredOffer> scoreOffers(
        String eventId, 
        String userId,
        MarketType marketType
    ) {
        // Get all available offers
        List<Offer> offers = offerRepository.findByEventAndMarket(eventId, marketType);
        
        // Get user preferences and betting history
        UserProfile profile = userService.getProfile(userId);
        
        // Score each offer
        List<ScoredOffer> scoredOffers = offers.stream()
            .map(offer -> {
                double score = calculateOfferScore(offer, profile);
                return new ScoredOffer(offer, score);
            })
            .sorted(Comparator.comparing(ScoredOffer::getScore).reversed())
            .collect(Collectors.toList());
        
        return scoredOffers;
    }
    
    /**
     * Multi-dimensional scoring algorithm
     */
    private double calculateOfferScore(Offer offer, UserProfile profile) {
        double score = 0.0;
        
        // Factor 1: Odds value (40% weight)
        score += normalizeOdds(offer.getOdds()) * 0.40;
        
        // Factor 2: Provider reliability (20% weight)
        score += getProviderReliabilityScore(offer.getProvider()) * 0.20;
        
        // Factor 3: Liquidity / max stake (15% weight)
        score += normalizeLiquidity(offer.getMaxStake()) * 0.15;
        
        // Factor 4: User preference for provider (15% weight)
        score += profile.getProviderPreference(offer.getProvider()) * 0.15;
        
        // Factor 5: Payment speed (10% weight)
        score += getProviderPaymentSpeed(offer.getProvider()) * 0.10;
        
        return score;
    }
}

Benefits:

  • Players see the best value bets instantly
  • Personalized recommendations based on history
  • Increased conversion rates
  • Improved user satisfaction

One-Click Onboarding & Seamless Sponsor Registration

Deep Provider API Integration

The Solution:

Deep integrations with partner operator APIs made it possible to register or withdraw funds in two clicks — without redirecting users out of the app.

Registration Flow:

// One-click registration with partner bookmaker
async function registerWithProvider(
  userId: string,
  providerId: string
): Promise<ProviderAccount> {
  
  // Get user KYC data from central database
  const user = await userService.getUser(userId);
  const kycData = await kycService.getVerifiedKyc(userId);
  
  if (!kycData.isVerified) {
    throw new Error('KYC verification required');
  }
  
  // Map to provider-specific format
  const providerRequest = mapToProviderFormat(user, kycData, providerId);
  
  // Call provider API to create account
  const providerClient = getProviderClient(providerId);
  const providerAccount = await providerClient.createAccount(providerRequest);
  
  // Store provider account mapping
  await accountMappingService.create({
    userId,
    providerId,
    providerAccountId: providerAccount.id,
    credentials: encryptCredentials(providerAccount.credentials),
    status: 'active',
    createdAt: new Date()
  });
  
  // Initialize wallet for this provider
  await walletService.createProviderWallet(userId, providerId);
  
  return providerAccount;
}

// Seamless fund deposit to provider
async function depositToProvider(
  userId: string,
  providerId: string,
  amount: number
): Promise<Transaction> {
  
  // Check user's central wallet balance
  const wallet = await walletService.getUserWallet(userId);
  
  if (wallet.balance < amount) {
    throw new InsufficientFundsError();
  }
  
  // Get provider account credentials
  const mapping = await accountMappingService.get(userId, providerId);
  const credentials = decryptCredentials(mapping.credentials);
  
  // Transfer funds to provider
  const providerClient = getProviderClient(providerId);
  const transaction = await providerClient.deposit({
    accountId: mapping.providerAccountId,
    amount,
    currency: 'EUR',
    credentials
  });
  
  // Update central wallet
  await walletService.deduct(userId, amount, {
    type: 'provider_transfer',
    providerId,
    transactionId: transaction.id
  });
  
  return transaction;
}

User Wallet Abstraction

Implementation:

User wallet abstraction and tokenized session handling maintained secure context across provider boundaries.

Wallet Architecture:

// Unified wallet service
class WalletService {
  /**
   * Get unified wallet view across all providers
   */
  async getUnifiedWallet(userId: string): Promise<UnifiedWallet> {
    // Get central wallet balance
    const centralWallet = await this.getCentralWallet(userId);
    
    // Get balances from all connected providers
    const providerMappings = await accountMappingService.getAll(userId);
    
    const providerBalances = await Promise.all(
      providerMappings.map(async (mapping) => {
        const client = getProviderClient(mapping.providerId);
        const balance = await client.getBalance(mapping.providerAccountId);
        
        return {
          provider: mapping.providerId,
          balance: balance.amount,
          currency: balance.currency,
          lastUpdated: new Date()
        };
      })
    );
    
    return {
      centralBalance: centralWallet.balance,
      providerBalances,
      totalBalance: this.calculateTotal(centralWallet, providerBalances)
    };
  }
  
  /**
   * Seamless withdrawal from provider to central wallet
   */
  async withdrawFromProvider(
    userId: string,
    providerId: string,
    amount: number
  ): Promise<Transaction> {
    const mapping = await accountMappingService.get(userId, providerId);
    const credentials = decryptCredentials(mapping.credentials);
    
    // Request withdrawal from provider
    const providerClient = getProviderClient(providerId);
    const withdrawal = await providerClient.withdraw({
      accountId: mapping.providerAccountId,
      amount,
      credentials
    });
    
    // Credit central wallet
    await this.credit(userId, amount, {
      type: 'provider_withdrawal',
      providerId,
      transactionId: withdrawal.id
    });
    
    return withdrawal;
  }
}

Payout & Risk Management

Custom Payout Engines

Implementation:

Custom payout engines computed maximum theoretical payouts per bet using normalized odds.

@Service
public class PayoutCalculationService {
    
    /**
     * Calculate optimal payout for single bet
     */
    public PayoutCalculation calculateSingleBet(
        Selection selection,
        double stake
    ) {
        double potentialReturn = stake * selection.getOdds();
        double potentialProfit = potentialReturn - stake;
        
        return PayoutCalculation.builder()
            .stake(stake)
            .odds(selection.getOdds())
            .potentialReturn(potentialReturn)
            .potentialProfit(potentialProfit)
            .build();
    }
    
    /**
     * Calculate optimal payout for accumulator bet
     */
    public PayoutCalculation calculateAccumulator(
        List<Selection> selections,
        double stake
    ) {
        // Calculate combined odds
        double combinedOdds = selections.stream()
            .map(Selection::getOdds)
            .reduce(1.0, (a, b) -> a * b);
        
        double potentialReturn = stake * combinedOdds;
        double potentialProfit = potentialReturn - stake;
        
        return PayoutCalculation.builder()
            .stake(stake)
            .odds(combinedOdds)
            .potentialReturn(potentialReturn)
            .potentialProfit(potentialProfit)
            .numberOfSelections(selections.size())
            .build();
    }
    
    /**
     * Calculate expected value across multiple providers
     */
    public ExpectedValue calculateExpectedValue(
        String eventId,
        Selection userSelection,
        double stake
    ) {
        // Get all available odds for this selection
        List<OddsOption> allOdds = oddsService.getAllOddsForSelection(
            eventId, 
            userSelection.getId()
        );
        
        // Find best odds
        OddsOption bestOdds = allOdds.stream()
            .max(Comparator.comparing(OddsOption::getOdds))
            .orElse(null);
        
        // Calculate difference in potential profit
        double currentProfit = (stake * userSelection.getOdds()) - stake;
        double bestProfit = (stake * bestOdds.getOdds()) - stake;
        double valueDifference = bestProfit - currentProfit;
        
        return ExpectedValue.builder()
            .currentProvider(userSelection.getProvider())
            .currentOdds(userSelection.getOdds())
            .bestProvider(bestOdds.getProvider())
            .bestOdds(bestOdds.getOdds())
            .potentialExtraProfit(valueDifference)
            .recommendation(valueDifference > 5.0 ? "Consider switching provider" : "Good value")
            .build();
    }
}

Fraud Detection & Compliance

Implementation:

Built-in fraud detection, pattern analysis, and KYC verification layers aligned with regulatory compliance standards.

@Service
public class RiskManagementService {
    
    @Autowired
    private MachineLearningService mlService;
    
    /**
     * Assess risk for bet placement
     */
    public RiskAssessment assessBet(Bet bet, UserProfile user) {
        double riskScore = 0.0;
        List<RiskFlag> flags = new ArrayList<>();
        
        // Check 1: Unusual stake size
        if (bet.getStake() > user.getAverageStake() * 5) {
            riskScore += 20;
            flags.add(RiskFlag.UNUSUAL_STAKE);
        }
        
        // Check 2: Rapid bet placement pattern
        List<Bet> recentBets = betRepository.findByUserIdAndTimestamp(
            user.getId(), 
            Instant.now().minus(5, ChronoUnit.MINUTES)
        );
        if (recentBets.size() > 10) {
            riskScore += 15;
            flags.add(RiskFlag.RAPID_BETTING);
        }
        
        // Check 3: Arbitrage detection
        if (detectArbitrage(bet)) {
            riskScore += 30;
            flags.add(RiskFlag.POSSIBLE_ARBITRAGE);
        }
        
        // Check 4: ML-based fraud detection
        double mlScore = mlService.predictFraudProbability(bet, user);
        riskScore += mlScore * 35;
        
        // Determine action
        RiskAction action = determineAction(riskScore);
        
        return RiskAssessment.builder()
            .riskScore(riskScore)
            .flags(flags)
            .action(action)
            .build();
    }
    
    private RiskAction determineAction(double riskScore) {
        if (riskScore > 70) return RiskAction.BLOCK;
        if (riskScore > 40) return RiskAction.REVIEW;
        return RiskAction.APPROVE;
    }
}

Multi-lingual, Globalized Platform

Internationalization Support

Implementation:

Internationalization support enabled language switching and region-specific content delivery.

Features:

  • Multiple language support (EN, NL, FR, DE, ES)
  • Currency localization (EUR, GBP, USD)
  • Region-specific betting regulations
  • Localized odds formats (decimal, fractional, American)
  • Timezone-aware event scheduling
// i18n configuration
const i18nConfig = {
  locales: ['en', 'nl', 'fr', 'de', 'es'],
  defaultLocale: 'en',
  localeDetection: true,
  
  // Currency formatting per locale
  currencies: {
    'en': 'EUR',
    'nl': 'EUR',
    'fr': 'EUR',
    'de': 'EUR',
    'es': 'EUR'
  },
  
  // Odds format preferences
  oddsFormats: {
    'en': 'decimal',
    'nl': 'decimal',
    'fr': 'decimal',
    'de': 'decimal',
    'es': 'decimal'
  }
};

// Dynamic content localization
const OddsDisplay: React.FC<{ odds: number }> = ({ odds }) => {
  const { locale } = useRouter();
  const oddsFormat = i18nConfig.oddsFormats[locale];
  
  const displayOdds = formatOdds(odds, oddsFormat);
  
  return <span className="odds-value">{displayOdds}</span>;
};

Performance & Stability Enhancements

Asynchronous Processing

Implementation:

Asynchronous processing pipelines ensured high-throughput ingestion of bookmaker feeds without blocking UI threads.

Key Optimizations:

  • Non-blocking I/O for API calls
  • Parallel processing of multiple feeds
  • Message queue for decoupled processing
  • Background jobs for heavy computations

Resilient Backend Logic

Implementation:

Resilient back-end logic incorporated circuit breakers and retries to handle API latency from third-party operators.

@Service
public class ResilientBookmakerClient {
    
    @CircuitBreaker(name = "bookmaker-api", fallbackMethod = "fallbackGetOdds")
    @Retry(name = "bookmaker-api", fallbackMethod = "fallbackGetOdds")
    @TimeLimiter(name = "bookmaker-api")
    public CompletableFuture<OddsResponse> getOdds(String providerId, String eventId) {
        BookmakerApiClient client = getProviderClient(providerId);
        return CompletableFuture.supplyAsync(() -> client.getOdds(eventId));
    }
    
    private CompletableFuture<OddsResponse> fallbackGetOdds(
        String providerId, 
        String eventId, 
        Exception e
    ) {
        logger.warn("Fallback for provider {}: {}", providerId, e.getMessage());
        
        // Return cached odds if available
        OddsResponse cached = cacheManager.get(eventId, providerId);
        if (cached != null) {
            return CompletableFuture.completedFuture(cached);
        }
        
        // Return empty response if no cache
        return CompletableFuture.completedFuture(OddsResponse.empty());
    }
}

Optimized Caching

Implementation:

Caching and optimized database access patterns reduced latency for high-frequency queries, such as odds refresh and offer ranking.

Caching Strategy:

  • Redis for real-time odds (5-30 second TTL)
  • In-memory cache for user sessions
  • CDN for static assets
  • Database query optimization with indexes

Results

Rapid Launch & Operational Support

Following extensive testing with a targeted user group, the platform was launched swiftly and underwent ongoing technical support to ensure stability and responsiveness.

Launch Metrics:

  • Beta testing with 500 users
  • 2-week soft launch period
  • Zero critical issues at launch
  • 99.9% uptime in first month

Wide Adoption Across Markets

Supported multiple languages and was rolled out across several countries, facilitating broad player adoption.

Geographic Expansion:

  • Belgium (primary market)
  • Netherlands
  • France
  • Germany
  • United Kingdom

Adoption Metrics:

  • 10,000+ registered users in first 3 months
  • 35% conversion rate from registration to first bet
  • 70% user retention after 30 days
  • 4.5/5 average user rating

Enhanced User Experience

A clean, well-structured UI/UX allowed players to compare and negotiate bets across multiple betting providers simultaneously — all without switching platforms.

UX Improvements:

  • Single interface for multiple bookmakers
  • Real-time odds comparison
  • One-click bet placement
  • Unified wallet management
  • No redirects to external sites

User Feedback:

  • “Finally, I can see all my options in one place”
  • “The odds comparison saves me so much time”
  • “Love the unified wallet - no more juggling accounts”
  • “Mobile experience is fantastic”

Seamless Third-Party Integration

The platform integrated tightly with external providers (bookmaker APIs, verification services, and payment gateways), delivering a cohesive ecosystem transparent and unified to end-users.

Integration Success:

  • 8+ bookmaker partners integrated
  • 3+ payment gateway providers
  • 2+ KYC verification services
  • 100% API uptime SLA maintained

Technical Highlights

Microservices Architecture

Technology: Java, Spring Boot
Benefit: Modular, independently deployable services

Real-Time Data Processing

Technology: Kafka, Redis, WebSocket
Benefit: Sub-second odds updates to users

Intelligent Offer Matching

Technology: Custom scoring algorithms
Benefit: Best value bets surfaced automatically

Multi-Provider Integration

Technology: API abstraction layer
Benefit: Seamless provider onboarding

Fraud Detection & Compliance

Technology: ML-based risk assessment
Benefit: Regulatory compliance and security

Cloud-Native Infrastructure

Technology: AWS (ECS, RDS, ElastiCache)
Benefit: Scalable, fault-tolerant platform

Conclusion

By building a unified betting aggregation platform, we successfully disrupted the fragmented bookmaker experience and delivered a seamless, high-performance solution that empowers players to make better betting decisions across multiple providers through a single, intuitive interface.

The platform demonstrates how intelligent aggregation, real-time data processing, and seamless integration can create significant value in the competitive iGaming market.

Key Achievements

Unified Experience - One platform for multiple bookmakers
Real-Time Intelligence - Best odds surfaced automatically
Seamless Integration - No redirects or external logins
Regulatory Compliance - Built-in fraud detection and KYC
Global Reach - Multi-language, multi-currency support

Business Impact

The platform enabled the client to:

  • Reduce user acquisition costs through better conversion
  • Increase customer lifetime value with unified wallet
  • Expand to new markets quickly with i18n support
  • Build competitive advantage through superior UX
  • Generate new revenue streams through provider partnerships

Ready to build a betting aggregation platform? Contact us to discuss how we can create a unified experience for your users.

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