Infrastructure and Deployment Overview

Cloud Provider: AWS.
Core Services Used: Lambda, API Gateway (HTTP API), S3, DynamoDB (On-Demand), Step Functions, EventBridge Scheduler, CloudFront, CloudWatch, IAM, ACM (if custom domain).
IaC: AWS CDK (TypeScript), with separate CDK apps in backend and frontend polyrepos.
Deployment Strategy (MVP): CI (GitHub Actions) for build/test/lint. CDK deployment (initially manual or CI-scripted) to a single AWS environment.
Environments (MVP): Local Development; Single Deployed MVP Environment (e.g., "dev" acting as initial production).
Rollback Strategy (MVP): CDK stack rollback, Lambda/S3 versioning, DynamoDB PITR.