Microsoft 365 vs Slack
Microsoft 365 vs Slack, compared side by side on 11 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Microsoft 365 is on 25/100 and Slack on 68/100.
Where each one leads
Microsoft 365
Leads on none of the measures we hold for both companies.
Slack
- our overall score: 68/100 against 25/100
- agent readiness: 56/100 against 40/100
At a glance
| Measure | Microsoft 365 | Slack |
|---|---|---|
| What it is | A suite of productivity, collaboration, and cloud-based services owned by Microsoft. | Channel-based messaging and collaboration platform for team communication and workflow automation |
| Category | Productivity Software, Cloud Services, Collaboration Tools, Enterprise Software | SaaS, Collaboration, Communication, Enterprise Software |
| Sells toBusiness model | B2B | B2C | Not published |
| Offering | Software | platform | services | SaaS |
| Founded | 2017 | 2013 |
| Headquarters | Redmond, United States | San Francisco, United States |
| Status | Inactive | Active |
Size, funding and growth
| Measure | Microsoft 365 | Slack |
|---|---|---|
| Employees | Not published | 3,000 |
| Total funding | Not published | $1.4B |
| Latest round | Not published | IPO |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Microsoft 365 | Slack |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 25/100 | 68/100 |
| Traction | Not published | 60/100 |
| Team | 60/100 | 10/100 |
| Community | Not published | 8/100 |
| Search visibility | 24/100 | 48/100 |
| Quality | Not published | 90/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (40/100) | D (56/100) |
| Domain ratingLink authority, 0-100 | 96/100 | 92/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Microsoft 365 | Slack |
|---|---|---|
| Hosting | Not detected | AWS |
| Analytics | Not detected | Google Tag Manager |
Microsoft 365 vs Slack: common questions
Which is better, Microsoft 365 or Slack?
On our 0-100 score Slack rates higher (68/100 against 25/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 11 data points above: read the rows that match what you are buying for.
How do Microsoft 365 and Slack compare on the numbers?
Slack leads on our overall score (68/100 against 25/100), agent readiness (56/100 against 40/100).
Read the full Microsoft 365 review and pricing or the Slack review and pricing. You can also browse other Microsoft 365 alternatives we track.