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Technologies / Office 365 / Slack

Companies using Office 365 and Slack

22 companies in our data have public evidence for both Office 365 and Slack, and 21 name both in their own subprocessor list. Each company below links to the source for every claim. Our coverage is partial, so this is not everyone.

22companies use both
45%of Office 365 users
1%of Slack users
21name both as subprocessors

Companies using one are 5.5 times as likely as the average company in our data to show evidence of the other.

The companies

Strongest evidence first: a company naming both in its own subprocessor list comes before one seen on its website or in job postings.

Subprocessor listPrivacy policyWebsiteJob postings

CompanyOffice 365Slack
Cavellcavell.aiCavell is an AI assistant that listens in during consultations and takes over administrative work such as medical reporting.AI and machine learningHealthcare
Cialfocialfo.coCialfo is an AI-powered university guidance platform that helps students build profiles, explore careers, discover universities, and submit applications directly.Education
Clockwork Recruitingclockworkrecruiting.comClockwork Recruiting provides a collaborative project management platform for retained executive search.HR and recruiting
Cloudbedscloudbeds.comTravel and hospitality
CloudResearchcloudresearch.comCloudResearch provides a platform for participant recruitment, AI-powered survey design, and fraud detection in online research.Data and analytics
Clue Digitalcluedigital.comClue Digital helps businesses use data and digital media to engage and convert new customers.Data and analyticsMarketing
Cognisys Groupcognisys.co.ukCognisys provides security compliance, consulting and penetration testing services.Compliance and riskCybersecurity
CoinCovercoincover.comCoinCover provides protection and recovery services for digital assets, including products for lost access and cyber threats.Crypto and blockchainCybersecurity
Cyrismacyrisma.comCyrisma provides a unified cyber risk and compliance platform that combines vulnerability management, attack surface monitoring, data discovery, secure baseline configuration, and compliance tracking.Compliance and riskCybersecurity
DoseSpotdosespot.comHealthcare
INXMinxm.ai
Maestro Labsmaestrolabs.comMaestro Labs makes AI assistants that draft and manage email in Outlook and Gmail and take notes in Teams, Meets and Zoom.AI and machine learningProductivity and collaboration
mattrmattr.globalMATTR provides digital credential solutions for issuing, holding, and verifying credentials.Identity and access
Odigosodigos.ioOdigos is a production context platform that records what runs inside services live without code changes.Developer tools
Pamoja Educationpamojaeducation.comPamoja provides IB-approved online courses for schools and students.Education
Relevance AIrelevanceai.comRelevance AI provides a platform for building and deploying AI agents that automate business tasks.AI and machine learning
Restaurant365restaurant365.comRestaurant365 provides a software platform that combines restaurant accounting, inventory, scheduling, and payroll.Finance and accounting softwareFood and restaurants
Sendmarcsendmarc.comSendmarc provides a platform for managing DMARC, SPF, and DKIM email authentication across domains.Cybersecurity
ShipBobshipbob.comShipBob is an end-to-end fulfillment provider that handles inventory distribution, order picking, packing, shipping, and returns for ecommerce brands.E-commerceLogistics and supply chain
Significosignifico.comSignifico builds custom health software products, apps, and tools, and also partners with benefits providers, insurance, and health companies to create custom solutions.Healthcare
Tatotato.coTato is a project management workspace that centralizes project context, meeting records, risks, actions, and decisions into a shared memory.
Joangetjoan.comJoan provides a platform for booking meeting rooms, desks, parking and assets, managing visitors, and displaying digital signage.

The two technologies

Office 365

Productivity

45% of the 49 companies we see using Office 365 also show the other.

All 49 companies using Office 36546 name it as a subprocessorMore in Productivity

Slack

by Salesforce · Productivity

Slack is a collaboration platform where teams chat, share files, and work together in channels. It is used for team communication, connecting apps and agents, and automating everyday work.

Summarized from slack.com on 8 Nov 2026.

1% of the 1,934 companies we see using Slack also show the other.

All 1,934 companies using Slack1,341 name it as a subprocessorMore in Productivity

Industries

Among the companies above, by our own classification of their homepage.

Cybersecurity4AI and machine learning3Healthcare3Education2Data and analytics2Compliance and risk2

Other pairs

Companies with their own evidence for both.

More with Office 365

Cloudflare49companiesAmazon Web Services32companiesGoogle Tag Manager29companiesHubSpot28companiesMicrosoft Azure27companiesMicrosoft 36522companies

More with Slack

Cloudflare1,813companiesGoogle Workspace1,580companiesAmazon Web Services1,298companiesStripe896companiesGoogle Tag Manager880companiesGoogle810companies

Questions

How many companies use both Office 365 and Slack?

22 companies in StrataDB's data have public evidence for both, and 21 of them name both in their own subprocessor list, the strongest evidence we hold. Our coverage is partial, so the real number is higher.

Which companies use Office 365 and Slack?

Cavell, Cialfo, Clockwork Recruiting, Cloudbeds and CloudResearch, and 17 more companies. Each one links to the evidence behind it.

How does StrataDB know a company uses Office 365 and Slack?

From four kinds of public evidence: subprocessor lists, privacy policies, website code and job postings. Each is kept apart with its source and the date we saw it. A company missing here means we found no evidence, not that it does not use them.

Find every company using Office 365 and Slack

See the full list with the source for each company, and run the same lookup for any technology from the API, Claude or your browser.

  • Every company and vendor, with its public source
  • 100 API calls a month, plus MCP and the Chrome extension
  • Work email only. No card, no sales call