Steam Platform's data pipeline architecture ingests diverse event streams from users, game servers, and developers through specialized protocols—Auth Events via TLS, Store Events via REST, Multiplayer data via UDP, and Community Events via WebSocket. Events flow through a dual-path Message Bus: real-time streaming for low-latency processing and scheduled batch queues for nightly aggregations, orchestrated by a Workflow Orchestrator. The Processing Layer applies Auth Service validation, Payment Processor verification, Fraud Detection, and ML-driven Recommendation Engine transformations before routing normalized data through a three-tier Data Lake: Raw Zone (Bronze) for ingestion, Curated Zone (Silver) for structured profiles and catalogs, and Aggregated Zone (Gold) for Analytics Warehouse and ML Feature Store. The Serving Layer exposes processed data via API Gateway, Store Frontend, Library Service, Community Portal, and CDN Downloads, with Redis caching and comprehensive monitoring including WAF security, KMS encryption, and audit logging. Fork this diagram on Diagrams.so to customize event schemas, add cloud-specific infrastructure (AWS Kinesis, Azure Event Hubs, GCP Pub/Sub), or integrate your own processing frameworks.