An open-source platform that enables developers to automate the deployment, scaling, and management of applications within containers. These containers bundle the application's software, libraries, and dependencies together, allowing it to run efficiently on any system. Docker provides a consistent environment for developers, enabling them to build, ship, and run applications across different environments, such as development, testing, and production. It also supports microservices architecture, enabling developers to break down applications into smaller, manageable components. Docker is widely adopted in the software development industry due to its portability, scalability, and ease of use. It also integrates with various CI/CD tools and provides a robust set of APIs for custom integrations. Docker is a fundamental tool for building and deploying modern applications and is a key enabler of containerization and cloud-native development practices. It is widely used in the DevOps and cloud computing ecosystems, and it has a strong community and ecosystem of tools and platforms that support its adoption. Docker is a key technology for enabling modern software development practices and is a critical component of the cloud-native landscape.