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Global payment processing platform

Stripe Payment Processing

Stripe

Stripe processes billions of dollars in payments annually across 135+ currencies. Their architecture prioritizes PCI DSS compliance at every layer, from card tokenization at the edge to encrypted storage at rest. Essential for fintech teams building PCI-compliant payment platforms with real-time fraud scoring and reliable webhook delivery.

Data Flow

Web Application Firewall
Payment API
Card Tokenizer
Payment Service
Fraud Detection
Webhook Queue
Webhook Delivery
Payment Records
Idempotency Store

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Service Breakdown (9 services)

Compute4 services
Payment Service
  • •Runs containerized microservices at scale
  • •Auto-scales based on CPU and memory utilization
  • •Supports rolling deployments and health checks
Fraud Detection
  • •Runs containerized microservices at scale
  • •Auto-scales based on CPU and memory utilization
  • •Supports rolling deployments and health checks
Webhook Delivery
  • •Runs containerized microservices at scale
  • •Auto-scales based on CPU and memory utilization
  • •Supports rolling deployments and health checks
Card Tokenizer
  • •Executes serverless functions on demand
  • •Scales automatically with zero idle cost
  • •Ideal for event-driven and async workflows
Networking2 services
Web Application Firewall
  • •Filters malicious web traffic with custom rules
  • •Protects against OWASP top 10 threats
  • •Inspects HTTP requests at the edge
Payment API
  • •Routes and throttles incoming API requests
  • •Enforces authentication and rate limiting
  • •Provides a unified entry point for microservices
Messaging1 service
Webhook Queue
  • •Decouples services with reliable message queuing
  • •Supports standard and FIFO delivery modes
  • •Scales automatically with message volume
Data2 services
Payment Records
  • •Manages relational databases with automated backups
  • •Supports Multi-AZ for high availability
  • •Handles read replicas for scaling reads
Idempotency Store
  • •Provides single-digit millisecond reads and writes
  • •Scales throughput automatically with demand
  • •Supports global tables for multi-region access

Scaling Strategy

Payment processing scales through SQS-based decoupling between the payment API and webhook delivery. Idempotency keys stored in DynamoDB prevent duplicate charges during retries. The fraud detection service scales independently using ECS auto-scaling, and CloudHSM provides hardware-backed key management that meets PCI HSM requirements without scaling bottlenecks.

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