operatingSystem

The operating system that your game server binaries run on. This value determines the type of fleet resources that you use for this build. If your game build contains multiple executables, they all must run on the same operating system. You must specify a valid operating system in this request. There is no default value. You can't change a build's operating system later.

Amazon Linux 2 (AL2) will reach end of support on 6/30/2025. See more details in the Amazon Linux 2 FAQs. For game servers that are hosted on AL2 and use server SDK version 4.x for Amazon GameLift Servers, first update the game server build to server SDK 5.x, and then deploy to AL2023 instances. See Migrate to server SDK version 5.