To the extent that this benchmark is valid, this is interesting: "In the original 2017 benchmark results, the compiled languages of Java and .Net Core 1.0 were

To the extent that this benchmark is valid, this is interesting: "In the original 2017 benchmark results, the compiled languages of Java and .Net Core 1.0 were clearly more consistent compared to the dynamic languages — Python and Node.js. Based on the latest 2018 performance testing results — we are no longer observing any significant variances between Java and the newer compiled languages (.Net Core 2.0 and Go), and the original dynamic languages." TLDR: You may be able to use a "slower" language for Lambda without necessarily losing much.