Azure platform for building and managing microservices and container applications. Like a framework for building complex applications from many small, independent pieces.
A large enterprise uses Service Fabric to build a customer management system from dozens of interconnected microservices.
Azure Service Fabric is similar to AWS ECS/EKS and GCP's GKE in that they all provide platforms for managing microservices and containerized applications, though Service Fabric offers unique features for stateful services.