Microsoft Copilot Memory
https://learn.microsoft.com/en-us/copilot/microsoft-365/copilot-personalization-memory
Microsoft 365 Copilot memory stored in user's Exchange mailbox with compliance alignment. GA Jul 2025.
At a glance
- Type
- Org / tenant-scoped (Exchange-backed)
- Tier
- T1
- Section
- Platform-provider memory
- Created
- 2025-07 (GA); public announcement June 2025 Microsoft Build
- Latest release
- not applicable — not OSS
- License
- not applicable — not OSS
- GitHub
- not applicable — no GitHub repo
- Pricing
- Free + paid
- Funding
- Microsoft public (MSFT); market cap ~$3T
Taxonomy
- storage
- relational
- retrieval
- injection
- persistence
- long-term
- update
- extraction
- unit
- fact
- governance
- auditable
- conflict
- overwrite
When to use
Optimised for: compliance + tenant-scoped governance via Exchange
Anti-fit: not for non-M365 / non-Microsoft tenants
Pros & cons
Pros
Enterprise-ready by default — M365 tenant boundaries, audit trails, compliance certifications; Pages abstraction makes memory inspectable like a document.
Cons
Tied to M365 — non-MS users have no path; feature cadence slowed by enterprise compliance review.
Claims & capabilities
Microsoft 365 Copilot memory stored in user's Exchange mailbox with compliance alignment; GA July 2025 (announced June 2025 Microsoft Build); 75% of Fortune 500 on M365
Technical surface
- API surface
- not applicable — consumer feature
- Backend storage
- custom (Microsoft-managed)
- Deployment
- Managed-only
- Embedding model
- not applicable — consumer feature
- Multi-tenancy
- hard-isolation
- MCP
- via official adapter — Copilot Studio supports MCP
- A2A
- supported (Copilot Studio A2A integration)
- OpenTelemetry
- first-class (Copilot Studio + App Insights)
Similar systems
Other platform-provider memory in the catalog, ranked by inbound references.
- AWS Bedrock AgentCore Memory T2
AWS managed memory service for agents running on Bedrock AgentCore. Native integrations with LangChain/LangGraph and Strands. Drives long-running MCP servers + agent workloads.
- Anthropic Claude Memory T1
Memory tool API + consumer "Memory" feature + Auto Dream consolidation. Document-as-memory rather than extracted-fact-as-memory.
- Anthropic Managed Agents — Memory T3
Mounts memory as files on a managed filesystem; Claude reads and writes via the same bash/code-execution tools used for agentic tasks. Unit of storage is a file — inspectable, editable, exportable by developers. Full audit log per session. Memory beta launched April 23, 2026, two weeks after Managed Agents itself launched April 8.
- Cloudflare Agent Memory T2
Managed persistent memory service for AI agents on Cloudflare's edge. Beta-launched April 2026. Sits alongside Workers AI / Vectorize as the memory tier of the Cloudflare agent stack.
- Gemini Enterprise Agent Platform Memory Bank (rebrand of Vertex AI Memory Bank) T1
GA at Google Cloud Next 2026 (2026-04-22). Vertex AI rebranded as Gemini Enterprise Agent Platform; Memory Bank now "Agent Platform Memory Bank" with new continuous event-streaming + automated memory generation triggered by configurable criteria (event count or idle time). Backed by Agent Runtime that supports long-running agents that maintain state for days. Note: separate "Memory Profiles" feature reported in TheNextWeb but not surfaced in official Google Cloud release notes — treated here as unconfirmed.
- Google Gemini Memory T1
Personal Context setting + Personal Intelligence packing. Memory import from ChatGPT/Claude (Mar 2026).