What is a Cluster API?

Cluster API is an open-source project that provides a declarative, Kubernetes-style API to automate the provisioning, upgrading, and management of Kubernetes clusters. It enables users to manage clusters on different infrastructure providers using a consistent approach and set of tooling. Cluster API abstracts the infrastructure-specific details, allowing for easier cluster lifecycle management, scalability, and automation. It is widely used by DevOps teams to simplify and standardize Kubernetes cluster operations across clouds and on-premises environments.