These five studies describe different outcomes from the Saati engagement. They are not five independent customers, and they are not evidence of a completed Windows Server migration.
Problem: A product needed usable retrieval and conversation evidence without making the AI layer a permanent single-provider dependency.
Intervention: Built foundational architecture and early integrated testing around retrieval, conversation, and replaceable service boundaries.
Result: Approximately 60 early RAG test conversations were reported during the engagement.
Problem: Performance work needed evidence instead of assumptions about where the system was slow.
Intervention: Measured streaming and proxy behavior, then used the observations to guide changes.
Result: Reported streaming/proxy performance improvements were evaluated against measured behavior.
Problem: The product needed to preserve the ability to change model, voice, and infrastructure providers.
Intervention: Defined replaceable model and voice-provider architecture with clearer ownership boundaries.
Result: The system retained a practical path to replace supported providers as requirements change.
Problem: Operational visibility and secrets management could not be left to an afterthought.
Intervention: Used client-owned secrets management and monitoring as part of the operating model.
Result: The engagement documented control over secrets and monitoring rather than treating them as opaque provider features.
Problem: The team needed to move from foundational architecture to an integrated product test quickly.
Intervention: Focused the work on the smallest useful architecture and product evidence loop.
Result: Approximately 20 days from foundational architecture work to integrated product testing and reported Apple approval.
The value is not a promise of universal portability or zero-effort change. It is a clearer operating model, measured decisions, replaceable boundaries, and evidence that helps a customer decide what to do next.