Execution environments/runtimes

Now that we have familiarized ourselves with the invocation types and event sources, let's take a detailed look at the execution runtimes that Lambda supports, as follows:

• Java and other JVM languages: JRE 8 
• Node.js: v8.10, v6.10, or v4.3
• Golang: Go 1.x
• Python: v3.6 and v2.7
• .NET Core: 1.0.1 and 2.0

The following sections will provide a brief overview of the components of an AWS Lambda execution environment.