The text discusses the complexity of infrastructure for traditional applications, which often relies on a comprehensive tooling suite to iterate and improve resources. However, serverless development mitigates some of this complexity by removing hardware configuration control, but still requires tools for orchestration, maintenance, and deployment. The article highlights four must-have tools for serverless developers: AWS SAM, docker-lambda, Lumigo-CLI, and AWS Serverless Developer Tools. These tools address issues such as duplication in function configurations, rapid iteration, local execution environment mirroring production, and integration with various AWS services. The open-source nature of these tools allows developers to customize and expand their toolchain, making serverless development more seamless and reliable.