The pitch is that building reliable backends for agentic apps involves different failure modes than traditional APIs — you need durable execution, retries, state management across long-running agent tasks, and audit trails. Rayfin is positioned as the opinionated runtime layer that handles that plumbing. Details on pricing, regional availability, and integration with existing Azure services were sparse from the Build announcement. Worth watching for the docs drop — the value here is entirely in the execution guarantees it actually provides, not the category name.