Lambda natively supports a variety of common runtimes, including Python, Node.js, Java, .NET, and others. If you prefer to use any other runtime, such as PHP or Perl, you can use a custom runtime. There are lists of community-maintained runtimes for a wide range of programming languages or you can build your own. As a result, Lambda customers can run Erlang, COBOL, Haskell, and almost any other runtime needed to support their workloads.
Regardless of compute platform, developers must take action if their preferred runtime version is no longer supported by the maintaining organization. Lambda has a documented runtime support policy for languages and frameworks that explains the process for runtime deprecation. Deprecation dates are driven by each runtime’s maintaining organization. Generally, AWS allows you to continue running functions on runtime versions for a period of time after the official runtime deprecation. You will receive emails from AWS if you have functions affected by an upcoming deprecation.