Platform-as-a-Product: Declarative Infrastructure for Developer Velocity

A declarative platform framework uses a single YAML configuration file per service to abstract infrastructure complexity, CI/CD pipelines, and operational concerns. Developers specify application requirements, resource limits, cloud dependencies, and deployment settings in one place, while the platform handles Kubernetes deployments, Terraform provisioning, and environment-specific configuration through Puppet. Schema validation enforces resource limits at authoring time, preventing over-allocation and enabling shift-left FinOps. The architecture separates CI (build, test, security scanning) from CD (infrastructure creation, deployment), balancing team autonomy with consistent delivery. This approach reduced deployment times from hours to minutes and decreased resource over-allocation by 60% in practice.