AppStream 2.0 App Blocks
Elastic fleet streaming instances utilize applications that are installed on virtual hard disk (VHD) files stored within an Amazon S3 bucket in your account. When it comes to app blocks with custom packaging, you have the flexibility to create your own VHD file and upload it to an Amazon S3 bucket within your account. Alternatively, for app blocks with AppStream 2.0 packaging, you can take advantage of the app block builder, which handles the packaging of your applications, creates a VHD file, and uploads it to your Amazon S3 bucket.
By using the AppStream 2.0 packaged app block, you not only eliminate the need for manual steps in building a VHD file, but also remove the requirement for a setup script. It expands application compatibility with elastic fleets, as well as reduces manual administrative steps required to create an app block. AppStream 2.0 handles the setup of app blocks with AppStream 2.0 packaging automatically without the need of any setup scripts. However, you can still provide optional post-setup scripts to customize the installation for your needs.