AWS Elastic Container Service (ECS) is a fully managed container orchestration service that enables users to easily run, manage and scale containers on AWS. ECS supports two launch types for running containers: Amazon EC2 and AWS Fargate. The EC2 launch type provides more control but requires more management, while the Fargate launch type abstracts away many complications and decision processes, making it faster and easier compared to EC2. Fargate is recommended for those just getting started with containers or have light workloads, as it runs containers without the overhead of managing and scaling servers and clusters, handles patching and maintenance, and provides operational efficiency. ECS launch types have specific ideal use cases, depending on your needs, and understanding when to use each is crucial for effective deployment. Additionally, AWS EC2 offers more control and advanced features but requires more management and can be relatively cheaper for running fully utilized clusters, especially if the task consumes a set or predictable amount of vCPU and memory.