Description: The Kubernetes Admission Controller is an essential component that acts as a piece of code that intercepts requests to the Kubernetes API server. Its primary function is to manage and regulate access to resources within a Kubernetes cluster, allowing admission policies to be applied before objects are created or modified in the cluster. This includes validating requests, modifying objects, and enforcing security policies. Admission controllers can be configured to perform various tasks, such as injecting configurations, validating resources, and applying security constraints, contributing to a more efficient and secure management of cloud resources. Its relevance extends to cloud cost optimization, as it allows organizations to establish policies that prevent resource overuse, thereby improving operational efficiency and reducing unnecessary expenses. In the context of DevSecOps, these controllers are crucial for ensuring that security practices are integrated into the software development lifecycle, ensuring that deployed applications meet security standards from the outset.
