AWS Fargate is a serverless compute engine for containers that allows you to run Docker and Open Container Initiative (OCI) compatible containers without the need to manage underlying infrastructure like EC2 instances. By abstracting away server provisioning, patching, and scaling, Fargate enables developers to focus solely on building and running their applications. You simply package your application in containers, specify the CPU and memory requirements, define networking and IAM policies, and Fargate handles the rest, automatically scaling resources based on demand and ensuring high availability. This pay-as-you-go model charges only for the compute and memory resources consumed by your containers, making it a cost-effective and efficient solution for deploying and managing containerized applications at any scale.