Serverless can be improved in several areas. Cold start times can be problematic for real-time applications, although they are acceptable for most use cases. Execution time limits, such as the 15-minute timeout limit, are restrictive for long-running batch processes. We have had to architect around this constraint. The debugging experience for Lambda functions could be smoother through Lambda Edge and SAM help. The development workflow could be improved in this area. Predicting costs can be challenging while scaling unpredictably, and better cost-forecasting tools would help. While CloudWatch integration is good, we would appreciate more real-time alerts out of the box without additional configuration. While AWS documentation is comprehensive, it is sometimes scattered. A more consolidated guide for common patterns, authentication workflows, and multi-server orchestration would help. SAM Local is useful but does not perfectly replicate the Lambda environment. Better environment parity would reduce scenarios where work fails locally but works in production, allowing these test cases to be fixed.
