usamaabdulkader/aws-reference-architectures

This repository is a portfolio of four AWS reference architectures, not one deployed application. The principal request-to-result flow is the student submission API: a client submits JSON, API Gateway invokes Lambda, and the function validates and stores a timestamped, uniquely identified item in DynamoDB. The other projects demonstrate controlled private-instance access, a multi-AZ web tier, and static-site delivery. The root README documents these systems; only the Lambda implementation was sampled, so other wiring is shown only where documented. The README describes temporary environments that were decommissioned after validation.