Installing the GWC S3 extension
The GWC S3 extension is listed among the other extension downloads on the GeoServer download page.
The installation process is similar to other GeoServer extensions:
Visit the website download page, locate your release, and download: http://sourceforge.net/projects/geoserver/files/GeoServer/2.24.2/extensions/geoserver-2.24.2-gwc-s3-plugin.zip
Verify that the version number in the filename (for example 2.24.2 above) corresponds to the version of GeoServer you are running.
Extract the contents of the archive into the
WEB-INF/lib
directory in GeoServer. Make sure you do not create any sub-directories during the extraction process.Restart GeoServer.
To verify the installation was successful, to “Tile Caching”, “Blobstores” and create a new blobstore, the S3 option show be available:

The S3 option showing while creating a new blobstore