Kosmoy vs Microsoft Agent 365: Cross-Platform AI Agent Management Compared (2026)

Each spoke is one capability, scored 0–10; the further a point sits from the centre, the stronger the product. Microsoft's shape peaks where the estate is deepest — Security & Shadow AI (9 vs 8) and Agent Building (9 vs 6) both go to Agent 365, and it ties Kosmoy on inventory (9–9): tenant-deep discovery on one side, estate-wide connectors on the other. Kosmoy's shape wins the runtime and the paperwork: Gateway & Policy Control (8 vs 6), Agent Containment (9 vs 7), Compliance & Audit (9 vs 7) and Deployment Sovereignty (10 vs 5), where a Microsoft-cloud-only governance plane meets self-hosted software.

Agent identity is native to the enterprise directory. Agents built in Copilot Studio and Microsoft Foundry automatically receive Entra Agent ID identities with conditional access and lifecycle governance — agents governed by the same directory, policies and reviews as employees. No independent vendor can mint first-class identities inside a customer's directory; Kosmoy's registry records and risk-tiers agents, but it is a registry, not the identity system itself.

Shadow-agent discovery reaches the endpoint and the network. Defender finds 25+ types of local agents and MCP servers on Windows and macOS endpoints, and Entra detects unknown AI apps at the network layer (GA March 2026) (secure agentic AI end-to-end). Kosmoy reconciles shadow AI through its inventory and gateway; it does not run agents' laptops. For discovering what employees quietly installed, Microsoft's sensors are simply closer to the ground.

Purview brings mature data-security machinery to agents. DLP, audit, insider risk and DSPM — machinery enterprises have tuned for years — now applies to agent interactions, including custom agents via the Purview SDK (Purview for Agent 365). Kosmoy applies PII and policy guardrails at the gateway; it does not attempt Purview's breadth of data-governance workflow.

Governance ships with the biggest agent-building platforms. Copilot Studio and Foundry are the largest agent factories in this comparison, and Agent 365 (GA May 1, 2026) wraps registry, access control, fleet observability and security around what they produce. Governance that arrives with the platform, rather than after it, is a real adoption advantage — there is no integration project.

First-party security integration no independent vendor matches inside the Microsoft estate. Defender detects and blocks runtime threats against agents — including prompt injection against coding agents — while Entra blocks risky agent identities, with signals flowing tenant-wide between the two (Microsoft Agent 365 overview). Within that estate, the integration surface is a moat.

Platform neutrality. Kosmoy's master agent registry and policy layer treat Microsoft as one estate among several: connectors pull agents from Azure AI Foundry, Bedrock, Vertex, Salesforce and ServiceNow into one risk-tiered list under one policy model. Agent 365 reportedly extends to agents built on AWS Bedrock and Google Vertex AI, but that coverage is newer, partial and in places preview-only as of August 16, 2026 — its depth is where its estate is.

Deployment sovereignty. Agent 365's governance plane exists only as Microsoft-cloud SaaS tied to M365/Entra tenancy; Foundry workloads can live in your Azure subscription, but the control plane cannot leave Microsoft's cloud. Kosmoy is single-tenant software in your own Kubernetes, including fully air-gapped — the reason sovereignty is the one axis scored 10 versus 5.

Containment as architecture, not policy. Microsoft's levers are quarantine, conditional access and policy-based blocking — real controls, some still in preview, but no general sandboxed execution environment is documented. Kosmoy's Action Capsule runs each agent, MCP server or private model in a kernel-enforced sandbox whose only egress is its paired gateway, with per-task credentials and a kill switch. A hijacked agent reaches only what its gateway allows.

A general-purpose LLM gateway. Microsoft enforces at several points — Conditional Access, Entra network controls, Foundry intervention points — but documents no LLM gateway product: no routing, no provider abstraction, no cross-vendor token budgets. Kosmoy's OpenAI-compatible gateway enforces guardrails, RBAC, budgets and logging on every LLM, MCP and A2A call, whichever provider serves it.

Framework evidence as product output. Purview delivers audit, insider risk and DSPM for agents, and Compliance Manager offers tenant-level regulatory templates — supporting machinery, not evidence. Kosmoy generates EU AI Act, ISO/IEC 42001 (aligned) and NIST AI RMF evidence bundles from registry state plus gateway logs: one source, every audit.

In practice the two layer more often than they collide. Agent 365 keeps governing the Microsoft estate with the depth only a first party has — directory identity, endpoint discovery, Purview — while Kosmoy sits above the estates as the master registry: its Azure AI Foundry connector pulls Microsoft-built agents into the same risk-tiered list as Bedrock, Vertex, Salesforce and ServiceNow agents, one policy gateway fronts model traffic across providers, and Action Capsules contain the agents whose blast radius warrants a sandbox.

That layering also hedges the roadmap. Microsoft's third-party coverage will likely deepen; if it does, the Kosmoy registry loses no value, because its point is the single cross-estate list, the framework evidence and the self-hosted control plane — properties Agent 365 does not offer at any depth of integration.