Docker is a platform that enables developers to package their applications and dependencies into portable containers for easy deployment on the cloud. - Developers can leverage Docker images to efficiently develop their own applications on Windows and Mac, and easily integrate with their favorite tools throughout the development pipeline. - Docker allows applications to be packaged as portable container images, ensuring consistent performance across different environments. - With Docker, developers can deploy multiple applications independently in separate containers, reducing the risk of conflicts between languages, libraries, or frameworks. - Docker also provides a comprehensive platform with UIs, CLIs, APIs, and security features that work together seamlessly throughout the application delivery lifecycle.