The term 'container orchestration' refers to the automated management of containerized applications across multiple environments. It includes tasks such as deployment, scaling, and networking of containers, ensuring they operate seamlessly together. Popular orchestration tools like Kubernetes and Docker Swarm facilitate the deployment of microservices architectures, enabling organizations to optimize resource usage and enhance application reliability. Container orchestration simplifies complex environments, supports continuous integration and delivery (CI/CD) practices, and enables greater agility in software development by allowing developers to focus on code rather than infrastructure management.