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AWS lambda: Expanded SnapStart support to container images

Service: lambda · 2026-09-03 · Documentation medium

File: lambda/latest/dg/snapstart.md

Summary

Updated runtime support list and added references to container image hooks and uniqueness requirements.

Security assessment

Adds security documentation links for container deployments without fixing vulnerabilities.

Evidence

For container images built on AWS Lambda base images or custom base images, refer to [Implementing SnapStart hooks for container images](./snapstart-runtime-hooks-custom.html) and validate your function code for handling SnapStart [uniqueness requirements](./snapstart-uniqueness.html).

Diff

diff --git a/lambda/latest/dg/snapstart.md b/lambda/latest/dg/snapstart.md
index 8c5917d4e..66daa9342 100644
--- a//lambda/latest/dg/snapstart.md
+++ b//lambda/latest/dg/snapstart.md
@@ -69 +69 @@ SnapStart is particularly beneficial for two main types of applications:
-SnapStart is available for the following [Lambda managed runtimes](./lambda-runtimes.html):
+SnapStart supports the following [Lambda managed runtimes](./lambda-runtimes.html) and the corresponding AWS Lambda base images across ZIP and container image deployment format:
@@ -80 +80 @@ SnapStart is available for the following [Lambda managed runtimes](./lambda-runt
-Other managed runtimes (such as `nodejs24.x` and `ruby4.0`), [OS-only runtimes](./runtimes-provided.html), and [container images](./images-create.html) are not supported.
+For container images built on AWS Lambda base images or custom base images, refer to [Implementing SnapStart hooks for container images](./snapstart-runtime-hooks-custom.html) and validate your function code for handling SnapStart [uniqueness requirements](./snapstart-uniqueness.html).
@@ -82 +82 @@ Other managed runtimes (such as `nodejs24.x` and `ruby4.0`), [OS-only runtimes](
-SnapStart does not support [provisioned concurrency](./provisioned-concurrency.html), [Amazon Elastic File System (Amazon EFS)](https://docs.aws.amazon.com/efs/latest/ug/accessing-fs.html), [Amazon S3 Files](https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-files.html), or ephemeral storage greater than 512 MB.
+Other managed runtimes (such as `nodejs24.x` and `ruby4.0`) and [OS-only runtimes](./runtimes-provided.html) are not supported. SnapStart does not support [provisioned concurrency](./provisioned-concurrency.html), [Amazon Elastic File System (Amazon EFS)](https://docs.aws.amazon.com/efs/latest/ug/accessing-fs.html), [Amazon S3 Files](https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-files.html), or ephemeral storage greater than 512 MB.