Amazon Redshift will discontinue support for Python user-defined functions (UDFs) after June 30, 2026, encouraging users to migrate to Lambda UDFs which offer better integration, scalability, and security. The article provides a detailed guide on how to transition existing Python UDFs to Lambda UDFs, including setup, testing, and monitoring through AWS tools.

A startup experienced a silent crash in AWS Lambda, where Node.js functions failed mid-execution without any logs or errors. Despite extensive evidence and escalation through AWS support channels, the company received no constructive engagement and was ultimately blamed for the issue, leading them to migrate their entire infrastructure to Azure.