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Microsoft 365 Copilot vs Gemini Enterprise

Productivity-suite assistants compared on tenant isolation, residency, certifications, and EU AI Act positioning.

Dimension
VendorMicrosoftGoogle
Categoryassistantsassistants
TypeVendorVendor
LicenseProprietaryProprietary
Statusactiveactive
Version
Last release
Data residency
Yes

EU Data Boundary compliant; Advanced Data Residency and Multi-Geo offerings.

Source
Partial

US/EU multi-region; residency per Workspace settings; relaxed when Search grounding is enabled.

Source
Deployment
Yes

SaaS within the Microsoft 365 tenant on Azure OpenAI; no self-hosted option. (saas)

Source
Yes

SaaS via Google Workspace / GCP; CMEK/VPC-SC in US/EU; no self-hosted option. (saas)

Source
Audit logging
Yes

Microsoft Purview audit logging of Copilot prompts/responses/citations; retention/eDiscovery.

Source
Yes

Access Transparency and Cloud Audit Logs cover Gemini Enterprise.

Source
SOC 2
Yes

Covered by Microsoft 365 SOC scope (Service Trust Portal).

Source
Yes

Gemini Enterprise (Standard/Plus) holds SOC 1/2/3.

Source
ISO 27001
Yes

Microsoft 365 (incl. Copilot) ISO 27001:2022 certified.

Source
Yes

Holds ISO 27001/27017/27018/27701.

Source
ISO 42001
Yes

Microsoft 365 Copilot achieved ISO 42001:2023 (March 2025).

Source
Unknown

ISO 42001 not listed on the Gemini Enterprise compliance page (the Workspace app SKU holds it).

EU AI Act
Unknown

Assessed limited-risk by product category; no published vendor EU AI Act conformity assessment. (role: limited-risk)

Unknown

Assessed limited-risk by product category; no published vendor EU AI Act conformity assessment. (role: limited-risk)

License risk
Yes

Proprietary SaaS; deep M365 Graph / Azure lock-in. (medium)

Source
Yes

Proprietary SaaS; GCP/Workspace lock-in. (medium)

Source
Reviewed2026-05-262026-05-26

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