CEL by Example
Summary
CEL by Example provides a concise, example-driven introduction to the Common Expression Language (CEL) and demonstrates practical patterns for strings, numbers, collections, time, logic, and data transformation. It positions CEL as a lightweight, portable rule language used in systems like Kubernetes, Google Cloud IAM, and Envoy, making it useful for developers implementing policy, validation, or automation logic in modern IT environments. This resource is a solid quick-start for engineers exploring expression-based automation in policy and data workflows.