DynamoDB

Using AWS services optimally demands general knowledge of all AWS services and their trade-offs, plus deep expertise in the chosen service (e.g., DynamoDB, Step Functions). Mediocre knowledge is insufficient, and the learning curve is steep with limited training materials available.

Deploying an app requires managing resources scattered across different AWS console sections (S3, CloudFront, Route 53, EC2/Fargate/Lambda+API Gateway, RDS/DynamoDB, billing alarms). These services don't integrate well out-of-the-box, forcing context switching and manual coordination.