Its 2025 and many teams create IDP automation—and fail. KubeCon EU 2025 revealed the solution: backend-first architecture defeats "portal fatigue." Through teaching platform engineering to 100K+ learners and building IDPs since 2018, I've seen this pattern repeatedly.
This hands-on tutorial builds Phase 1 of production IDP: infrastructure control plane using three CNCF projects (Kubernetes+ArgoCD+Crossplane). In 75 minutes, deploy complete GitOps backend where infrastructure provisioning works via Git commits—no portal required. Watch developers request PostgreSQL databases, Redis clusters, S3 buckets through YAML in Git, with ArgoCD orchestrating Crossplane to provision real cloud resources.
This prevents the "portal-first" trap where 80% adoption yields 10% usage. Leave with working Crossplane Compositions, ArgoCD ApplicationSets, and integration patterns. Your platform backend is production-ready before considering portals—exactly what 73% of successful teams build first.