The S3 storage service provided by Amazon Web Services (AWS) has received worldwide recognition from global enterprises. For existing S3 customers, inwinSTACK recommends using Ceph as backend storage to fulfil their massive data storage demands. Clients can access S3 portal through RESTful API provided by RADOSGW of Ceph to provide object storage service, which also includes the basic functions of S3 such as create, index, and delete bucket, upload and download file or folder, create object shared link, data flow control, etc.