Cloud Storage & Office Suites · reliability comparison
iCloud vs Microsoft 365: which is more reliable? (2026)
iCloud and Microsoft 365 are effectively tied on reliability (100.0 vs 100.0). Over the last 90 days iCloud reported 0 incidents and Microsoft 365 reported 0, with effective uptime of 100% and 100% respectively.
Data updated Nov 1, 2026 · How we score
| Metric | iCloud | Microsoft 365 |
|---|---|---|
| Reliability score | 100.0 | 100.0 |
| Rank (cloud storage & office suites) | — | — |
| Uptime (90 days) | 100% | 100% |
| Incidents (90 days) | 0 | 0 |
| Partial / major outages | 0 | 0 |
| Avg time to resolve | — | — |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
90-day uptime
iCloud
Microsoft 365
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent iCloud incidents
No incidents reported by iCloud in the last 90 days.
Recent Microsoft 365 incidents
No incidents reported by Microsoft 365 in the last 90 days.
Other cloud storage & office suites to consider
- Tresorit · #1 · 100% uptime
- SugarSync · #2 · 100% uptime
- ShareFile · #3 · 99.99% uptime
- Egnyte · #4 · 99.94% uptime
See the full most reliable cloud storage & office suites ranking →