This document discusses using Kotlin for backend development with AWS Lambda and serverless architecture. Some key advantages of Kotlin include its conciseness, type safety, IDE support, and interoperability with Java. AWS Lambda provides horizontal scaling and allows focusing on code without managing servers. The Serverless framework makes it easy to deploy event-driven functions. Some challenges of AWS Lambda include package size limits and cold start times, while the Serverless framework may have longer initial deploy times for large projects. Overall warm up functions and use additional stacks to address resource limits when using these serverless technologies.