Slack AI

AI-powered search, summaries, and workflows built into Slack

Microsoft Copilot

AI assistant embedded across Microsoft 365 apps

Slack AI

Strong

20/25

Microsoft Copilot

Strong

20/25

Score Breakdown

DimensionSlack AIMicrosoft Copilot

Data Residency

Where is your data stored and processed?

Slack AI: Slack offers data residency in the US, EU, and Asia Pacific regions. Enterprise Grid customers can choose where their data is stored at rest.

Microsoft Copilot: Microsoft offers data residency across multiple global regions including US, EU, UK, and Asia Pacific. Customers can select their data location and data stays within the Microsoft 365 compliance boundary.

4/5

Slack offers data residency in the US, EU, and Asia Pacific regions. Enterprise Grid customers can choose where their data is stored at rest.

4/5

Microsoft offers data residency across multiple global regions including US, EU, UK, and Asia Pacific. Customers can select their data location and data stays within the Microsoft 365 compliance boundary.

Legal Jurisdiction

Which laws govern the company and your data?

Slack AI: Incorporated in Delaware, US. As a Salesforce subsidiary, subject to US laws including the CLOUD Act. Offers EU data processing agreements and Standard Contractual Clauses.

Microsoft Copilot: Incorporated in Washington State, US. Subject to US laws including the CLOUD Act. Microsoft has challenged government data requests and offers EU Data Boundary commitments.

3/5

Incorporated in Delaware, US. As a Salesforce subsidiary, subject to US laws including the CLOUD Act. Offers EU data processing agreements and Standard Contractual Clauses.

3/5

Incorporated in Washington State, US. Subject to US laws including the CLOUD Act. Microsoft has challenged government data requests and offers EU Data Boundary commitments.

Data Retention & Training

Is your data used for model training?

Slack AI: Administrators can configure custom data retention policies. Enterprise Grid offers granular retention controls. Data can be exported and deleted on request.

Microsoft Copilot: Copilot interactions inherit Microsoft 365 retention policies. Administrators have granular control over data retention, deletion, and eDiscovery. Copilot prompts and responses are stored in Exchange Online.

4/5

Administrators can configure custom data retention policies. Enterprise Grid offers granular retention controls. Data can be exported and deleted on request.

4/5

Copilot interactions inherit Microsoft 365 retention policies. Administrators have granular control over data retention, deletion, and eDiscovery. Copilot prompts and responses are stored in Exchange Online.

Certifications

ISO 27001, SOC 2, Cyber Essentials, etc.

Slack AI: Comprehensive certification portfolio including SOC 2 Type II, SOC 3, ISO 27001, ISO 27017, ISO 27018, ISO 27701, and ISO 42001. One of the most thoroughly certified collaboration platforms.

Microsoft Copilot: One of the most extensively certified cloud platforms globally, holding SOC 1/2 Type II, ISO 27001, ISO 27018, ISO 27701, FedRAMP High, and dozens of additional certifications across regions and industries.

5/5

Comprehensive certification portfolio including SOC 2 Type II, SOC 3, ISO 27001, ISO 27017, ISO 27018, ISO 27701, and ISO 42001. One of the most thoroughly certified collaboration platforms.

5/5

One of the most extensively certified cloud platforms globally, holding SOC 1/2 Type II, ISO 27001, ISO 27018, ISO 27701, FedRAMP High, and dozens of additional certifications across regions and industries.

Regulatory Fit

Suitability for regulated industries and professional services

Slack AI: Supports GDPR, CCPA, HIPAA, FINRA, and FedRAMP compliance. Enterprise Grid plan includes features for regulated industries including eDiscovery and data loss prevention.

Microsoft Copilot: Supports a vast range of regulatory frameworks including GDPR, HIPAA, FedRAMP, FERPA, and many industry-specific requirements. Government cloud offerings available for public sector customers.

4/5

Supports GDPR, CCPA, HIPAA, FINRA, and FedRAMP compliance. Enterprise Grid plan includes features for regulated industries including eDiscovery and data loss prevention.

4/5

Supports a vast range of regulatory frameworks including GDPR, HIPAA, FedRAMP, FERPA, and many industry-specific requirements. Government cloud offerings available for public sector customers.

Total Score

20/25

Best For

Slack AI

Best for organisations requiring broad certification coverage (SOC 1 Type II, SOC 2 Type II, ISO 27001); privacy-conscious teams who need strong data retention controls.

Microsoft Copilot

Best for organisations requiring broad certification coverage (SOC 2 Type II, SOC 3, ISO 27001); privacy-conscious teams who need strong data retention controls.

Detailed Comparison

Microsoft Copilot vs Slack AI: Trust & Compliance Comparison

Microsoft Copilot (Microsoft, US) scores 20/25 overall with a Silver (Strong) trust badge. AI assistant embedded across Microsoft 365 apps. Slack AI (Salesforce, US) scores 20/25 with a Silver (Strong) trust badge. AI-powered search, summaries, and workflows built into Slack.

Dimension-by-Dimension Breakdown

#### Data Residency

Both score equally at 4/5.

●Microsoft Copilot (4/5): Microsoft offers data residency across multiple global regions including US, EU, UK, and Asia Pacific. Customers can select their data location and data stays within the Microsoft 365 compliance boundary.

●Slack AI (4/5): Slack offers data residency in the US, EU, and Asia Pacific regions. Enterprise Grid customers can choose where their data is stored at rest.

#### Legal Jurisdiction

Both score equally at 3/5.

●Microsoft Copilot (3/5): Incorporated in Washington State, US. Subject to US laws including the CLOUD Act. Microsoft has challenged government data requests and offers EU Data Boundary commitments.

●Slack AI (3/5): Incorporated in Delaware, US. As a Salesforce subsidiary, subject to US laws including the CLOUD Act. Offers EU data processing agreements and Standard Contractual Clauses.

#### Data Retention & Training

Both score equally at 4/5.

●Microsoft Copilot (4/5): Copilot interactions inherit Microsoft 365 retention policies. Administrators have granular control over data retention, deletion, and eDiscovery. Copilot prompts and responses are stored in Exchange Online.

●Slack AI (4/5): Administrators can configure custom data retention policies. Enterprise Grid offers granular retention controls. Data can be exported and deleted on request.

#### Certifications

Both score equally at 5/5.

●Microsoft Copilot (5/5): One of the most extensively certified cloud platforms globally, holding SOC 1/2 Type II, ISO 27001, ISO 27018, ISO 27701, FedRAMP High, and dozens of additional certifications across regions and industries.

●Slack AI (5/5): Comprehensive certification portfolio including SOC 2 Type II, SOC 3, ISO 27001, ISO 27017, ISO 27018, ISO 27701, and ISO 42001. One of the most thoroughly certified collaboration platforms.

#### Regulatory Fit

Both score equally at 4/5.

●Microsoft Copilot (4/5): Supports a vast range of regulatory frameworks including GDPR, HIPAA, FedRAMP, FERPA, and many industry-specific requirements. Government cloud offerings available for public sector customers.

●Slack AI (4/5): Supports GDPR, CCPA, HIPAA, FINRA, and FedRAMP compliance. Enterprise Grid plan includes features for regulated industries including eDiscovery and data loss prevention.

Certifications at a Glance

Certification	Microsoft Copilot	Slack AI
FedRAMP High	Yes	No
ISO 27001	Yes	Yes
ISO 27017	No	Yes
ISO 27018	Yes	Yes
ISO 27701	Yes	Yes
SOC 1 Type II	Yes	No
SOC 2 Type II	Yes	Yes
SOC 3	No	Yes

Overall Verdict

Microsoft Copilot and Slack AI are closely matched on trust and compliance, with scores of 20/25 and 20/25 respectively. The right choice depends on your specific regulatory requirements and existing technology stack.

Frequently Asked Questions

Which is better for EU compliance, Slack AI or Microsoft Copilot?

Slack AI has a TrustKit score of 20/25 while Microsoft Copilot scores 20/25. Both tools are currently rated equally across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Slack AI and Microsoft Copilot compare on data residency?

Slack AI scores 4/5 for data residency (Slack offers data residency in the US, EU, and Asia Pacific regions. Enterprise Grid customers can choose where their data is stored at rest.), while Microsoft Copilot scores 4/5 (Microsoft offers data residency across multiple global regions including US, EU, UK, and Asia Pacific. Customers can select their data location and data stays within the Microsoft 365 compliance boundary.).

Are Slack AI and Microsoft Copilot GDPR compliant?

Both tools are assessed across five compliance dimensions. Slack AI has a regulatory fit score of 4/5 and Microsoft Copilot scores 4/5. Check the full comparison above for a detailed breakdown.

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