Event-driven publishing pipeline using Allesheh SNS triggering AWS Lambda to orchestrate content distribution across Appleseed Service, Video API, and Apple News Publisher within a three-tier VPC architecture. Data flows from SNS through Lambda into the Distribution Layer where Appleseed Service coordinates video processing and content routing to the Access Layer. Apple News Publisher persists metadata in PostgreSQL and syncs with Apple News API, demonstrating separation of concerns across Core, Distribution, and Access layers. This architecture decouples notification ingestion from downstream publishing workflows, enabling independent scaling and fault isolation. Fork this diagram on Diagrams.so to customize VPC CIDR blocks, add additional Lambda functions, or integrate alternative notification sources.