Lambda automatically applies patches and security updates to all managed runtimes and their corresponding container base images. Automatic runtime patching is one of the features customers love most about Lambda. When these patches are no longer available, Lambda ends support for the runtime. Over the next few months, Lambda is deprecating a number of popular runtimes, triggered by end of life of upstream language versions and of Amazon Linux 1.
When you deploy your function as a .zip file archive, you choose a runtime when you create the function. To change the runtime, you can update your function's configuration. Lambda keeps each managed runtime up to date by taking on the operational burden of patching the runtimes with security updates, bug fixes, new features, performance enhancements, and support for minor version releases. These runtime updates are published as runtim
This post contains considerations and best practices for managing runtime deprecations and upgrades when using Lambda. Adopting these techniques makes managing runtime upgrades easier, especially when working with a large number of functions.
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