Isolation and high-density — Containerization ensures application isolation in terms of security and data access, and as resource allocation. It’s a reliable solution to run multiple tasks or applications on the same host. This approach enables you to maximize overall resource utilization and minimize idle capacity, also known as a “high-density” deployment.

Runtime packaging and seamless deployment — Containers include application code or binaries along with all the dependencies needed to keep the application running. This approach ensures the application behaves consistently in all environments, from a developer laptop to a production environment. It also simplifies migrating applications from one host to another.

High availability (HA) — Container orchestrators provide an abstraction layer on top of conventional hosting environments and keep track of running containers. You don’t have to run applications, just tell the orchestrator which applications are expected to run. The orchestration engine keeps track of the existing state, evaluates it against the expected state, and corrects as needed. If an application goes down, the orchestrator immediately spins up another container to run your application in the next available host.

Resource management for distributed systems — Containerization is an effective approach to run microservices and other types of distributed systems. The deployment abstraction provided by containers enables you to focus on your applications rather than their dependencies with underlying hosts and infrastructure.

https://docs.aws.amazon.com/whitepapers/latest/develop-deploy-dotnet-apps-on-aws/running-applications-in-containers.html