About This Architecture
Multi-AZ mobile productivity app architecture with WAF, CloudFront CDN, and Application Load Balancer protecting traffic across two availability zones. API Gateway routes requests to microservices (Auth, Room, Alarm, Leaderboard, Payment, Profile) running on ECS, with Focus Session Lambda handling serverless workloads and external integrations via Razorpay and Agora/Twilio APIs. PostgreSQL Primary/Standby with read replicas, ElastiCache Redis, DynamoDB Sessions, and S3 storage provide resilient data persistence across AZ-1 and AZ-2. CloudWatch monitoring and SNS notifications ensure operational visibility and alerting for this production-grade mobile backend.