Docker

Container technology adoption accelerated when Docker introduced an open-sourced Docker Engine in 2013. Docker Engine set a new standard for container use with easy tools for developers and defined a universal approach for how containers should be packaged. This de facto standard was later formalized with the creation of the Open Container Initiative (OCI) in 2015, which Docker helped establish. The OCI now develops open standards for container runtimes and image formats. This ensures that containers are portable and can be run by any compliant engine, not just Docker's. In fact, Docker contributed its own runtime, containerd, to the Cloud Native Computing Foundation (CNCF), where it now serves as a foundational component for many container platforms.