Containerization is a method of packaging and deploying software applications in isolated and standardized units called containers. These containers include everything needed to run the software, such as code, libraries, dependencies, and configuration files. This approach allows developers to easily create, deploy, and manage applications across different computing environments, from local development machines to public or private cloud platforms. Containerization technology, popularized by platforms like Docker and Kubernetes, has revolutionized the way software is developed, tested, and deployed, enabling greater scalability, flexibility, and efficiency in modern software development workflows.