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AWS CodeBuild now supports Amazon Linux 2023 for on-demand build hosts

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AWS CodeBuild now supports Amazon Linux 2023 for on-demand build hosts through a new host kernel selection setting.

  • Choose between Amazon Linux 2 (kernel 4) or Amazon Linux 2023 (kernel 6) for build hosts
  • Amazon Linux 2023 includes updated Linux kernel, glibc, and package improvements
  • Validate AL2023 on non-production projects while keeping production on current kernel
  • Available in all AWS Regions except GovCloud (US) and China, which support only AL2023
  • Configure via host kernel setting in create-project command

This launch enables gradual migration to Amazon Linux 2023 while maintaining stability for existing production builds.

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