What is .NET Aspire, what problems does it solve, and what does it not replace?

In production planning I would treat the Aspire app model as deployment intent, not proof that every local resource maps one-to-one to production. A local Redis container may become a managed cache, a local PostgreSQL container may become a managed database, and several project resources may share or separate compute according to scaling and security needs. The target environment still owns networking, identities, secrets, certificates, persistence, autoscaling, rollouts, backups, and incident response. I would adopt Aspire incrementally around the most painful dependencies, keep the AppHost small enough to understand, and avoid hiding important configuration behind convenience methods no one can diagnose. Success means a clean checkout can start a representative environment, telemetry explains cross-service behavior, tests can compose real dependencies safely, and the production delivery path remains explicit and reproducible. If the app is a simple single process with no difficult dependencies, Aspire may add little value; the tool should earn its place through reduced setup and diagnostic cost.