Containers are an architectural approach that utilizes modern operating system features to create isolated, lightweight environments for applications. They are designed to provide consistency and recreatability across different environments, reducing the need for developers to spend time debugging and fixing infrastructure issues. Containers offer benefits such as security, stability, scalability, cost-effectiveness, and team focus, making them an attractive solution for businesses looking to adopt modern application architecture principles. By using containers and orchestrators like Kubernetes, developers can automate tasks, maintain consistency, and release updates more frequently, ultimately improving the development process and reducing downtime. Humanitec's professional services are available to support businesses on their containerization journey, providing expertise and guidance throughout the process.