"Crossplane Composition Functions in Practice"
"Crossplane Composition Functions in Practice" is the definitive guide for platform engineers and DevOps practitioners seeking to master Crossplane's advanced composition model. Drawing on the strengths of Kubernetes-style declarative APIs, this book delves into how Crossplane revolutionizes infrastructure management through highly extensible, function-driven compositions. Readers are introduced to the foundations of Crossplane, including composite resources, provider integrations, and the architectural evolution that has led to the emergence of powerful composition functions.
Through detailed explanations and practical guidance, the book unpacks the anatomy of a composition function—from API specifications and OCI image packaging to security, observability, and lifecycle automation. You'll learn cross-language development strategies for implementing robust functions, dive into best practices for testing, debugging, and CI/CD integration, and explore declarative logic patterns such as advanced parameter mapping, conditional resource orchestration, and dynamic patching. Specialized chapters provide deep dives into integrating with external data sources, policy engines, and cloud services, ensuring your platform APIs remain secure, compliant, and fully automated.
Enriched with real-world use cases and reference architectures, the book demonstrates how composition functions enable composable cloud services, multi-cloud workflows, self-service infrastructure APIs, and cost optimization at scale. Concluding with a forward-looking view of Crossplane's evolving ecosystem, open source registries, and integrations with AI/ML and serverless paradigms, "Crossplane Composition Functions in Practice" is an essential resource for anyone architecting cloud-native platforms or driving infrastructure as code innovation.