Agent harnesses
Microsoft Foundry Agent Service
Managed platform for prompt agents, voice prompt agents, and hosted agents on any framework
Commercial
What it is
Our note
Foundry Agent Service handles conversation state and tool-call lifecycle in its Agent Runtime, with bring-your-own Azure resources (Azure Cosmos DB, Azure AI Search, storage) so customers own the conversation store; hosted agents get session-level state persistence plus an Agent Optimizer that continuously rewrites instructions and skills from production behavior.
At a glance
- Vendor
- Microsoft
- Business model
- Commercial
- Self-hosting
- No, hosted only
- Access
- API/web app
Links and sources
Facts verified nov 10, 2026; added nov 10, 2026. Vendor facts come from the vendor’s own pages; benchmark claims are self-reported unless we say otherwise.