CDN & DNS Providers · reliability comparison
Fastly vs Imperva: which is more reliable? (2026)
Fastly is more reliable than Imperva, scoring 72.0 vs 31.9 out of 100. Over the last 90 days Fastly reported 11 incidents and Imperva reported 30, with effective uptime of 99.60% and 96.09% respectively. Fastly resolves incidents faster on average (1h 45m).
Data updated Nov 1, 2026 · How we score
| Metric | Fastly | Imperva |
|---|---|---|
| Reliability score | 72.0 | 31.9 |
| Rank (CDN & DNS providers) | #6 | #9 |
| Uptime (90 days) | 99.60% | 96.09% |
| Incidents (90 days) | 11 | 30 |
| Partial / major outages | 4 | 8 |
| Avg time to resolve | 1h 45m | 11h 57m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Fastly and Imperva differ
- Imperva reported 2.7× as many incidents as Fastly over the last 90 days (30 vs 11).
- Imperva had 8 partial or major outages, compared with 4 for Fastly.
- Fastly fixes problems faster: 1h 45m on average, against 11h 57m for Imperva (6.8× quicker).
- Fastly's longest outage on record lasted 2h 37m (Oct 26, 2026); Imperva's lasted 3d (Aug 13, 2026).
90-day uptime
Fastly
Imperva
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Fastly incidents
- Degraded performanceOct 31, 2026 · ongoing
- Degraded performanceOct 29, 2026 · resolved in 40m
- Partial outageOct 29, 2026 · resolved in 1h 28m
- Partial outageOct 27, 2026 · resolved in 1h 37m
- Degraded performanceOct 27, 2026 · resolved (duration not published)
- Partial outageOct 26, 2026 · resolved in 2h 37m
Recent Imperva incidents
- Major outageOct 29, 2026 · resolved in 9h 5m
[INC-1173] - QRO PoP Connectivity Issue
Affected: Queretaro, Mexico (QRO)
- Degraded performanceOct 20, 2026 · resolved in 7h 38m
[INC-1166] Service Degradation Affecting Newly Onboarded Sites
Affected: Cloud Security Management Platform
- InformationalOct 19, 2026 · resolved in 5h 10m
[INC-1165] Service Degradation Affecting Newly Onboarded Sites
- InformationalOct 13, 2026 · resolved in 2h 11m
- Degraded performanceOct 13, 2026 · resolved in 4h 16m
[INC-1160] Degradation of Imperva Generated Certificate Issuance
Affected: Cloud Security Management Platform
- Partial outageOct 9, 2026 · resolved in 11h 55m
[INC-1158] Service Degradation of Dallas, TX (DAL) PoP
Affected: Dallas, TX (DAL)
Other CDN & DNS providers to consider
- DNSimple · #1 · 99.94% uptime
- Amazon CloudFront · #2 · 100% uptime
- Amazon Route 53 · #3 · 100% uptime
- Google Cloud CDN & Cloud DNS · #4 · 99.85% uptime