Cloud Storage & Office Suites · reliability comparison
Backblaze vs Microsoft 365: which is more reliable? (2026)
Microsoft 365 is more reliable than Backblaze, scoring 100.0 vs 62.0 out of 100. Over the last 90 days Backblaze reported 2 incidents and Microsoft 365 reported 0, with effective uptime of 99.48% and 100% respectively.
Data updated Nov 1, 2026 · How we score
| Metric | Backblaze | Microsoft 365 |
|---|---|---|
| Reliability score | 62.0 | 100.0 |
| Rank (cloud storage & office suites) | #8 | — |
| Uptime (90 days) | 99.48% | 100% |
| Incidents (90 days) | 2 | 0 |
| Partial / major outages | 0 | 0 |
| Avg time to resolve | 19h 55m | — |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Backblaze and Microsoft 365 differ
- Microsoft 365 reported no incidents in the last 90 days, while Backblaze reported 2.
90-day uptime
Backblaze
Microsoft 365
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Backblaze incidents
- Degraded performanceOct 30, 2026 · ongoing
New incident: "Customers in the US east region might be facing issues with downloads"
- Degraded performanceOct 30, 2026 · resolved in 19h 55m
- MaintenanceOct 28, 2026 · resolved (duration not published)
Scheduled Maintenance: US West Network Maintenance, October 28, 2026
- MaintenanceOct 28, 2026 · resolved (duration not published)
Scheduled Maintenance: EU Central Network Maintenance October 28, 2026
- MaintenanceOct 21, 2026 · resolved (duration not published)
Scheduled Maintenance: US West Network Maintenance, October 21, 2026
- MaintenanceOct 8, 2026 · resolved (duration not published)
Scheduled Maintenance: US East Region Network Maintenance Oct 14, 2026
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 →