PouchContainer is an open-source project created by Alibaba Group to promote the container technology movement. PouchContainer is a highly reliable container engine open sourced by Alibaba. It is an excellent software layer to fill up gap between business applications and underlying infrastructure. The strong-isolation ability and rich container are its representitive features. PouchContainer is compatible with OCI image spec. Applications can minimize their storage usage with layered image structure. Incremental image distribution, saves datacenter bandwidth consumption. Significantly less runtime overhead than VM-based technologies. PouchContainer provides strong runtime isolation between applications, with cutting-edge technology both within kernel support and beyond kernel mode. PouchContainer supports standardized application image spec, so application sharing and reusing becomes trivial for developers and operators.