Cloud Service Reliability Report
June 2026
ServiceAlert Reliability Research · Generated 31 July 2026 from first-party polling of official vendor status sources.
Method: the worst aggregate vendor-reported state observed on each UTC day. Results measure reported issue frequency—not duration-based, component-weighted, contractual, or user-journey uptime. Read the methodology or request a correction at support@servicealert.ai.
June 2026 was a challenging month for cloud reliability. Average issue-free-day rate across 2313 monitored services was 85.19%, down 1.18% from May.
Key Findings
- Average uptime across 2313 services was 85.19%, down 1.18% from May
- Payments & Fintech had the most issues with 118 total incident-days
- 1173 services maintained 100% uptime (Platinum tier)
- 1140 services (49.3%) experienced at least one issue during June
Issue-Free-Day Distribution
Category Breakdown
Biggest Incidents
Most Affected Services
| Service | Issue-Free Days | Issue Days | Breakdown |
|---|---|---|---|
| Cloudflare | 0% | 30 | 28d degraded 2d major |
| Tenable | 0% | 30 | 30d major |
| Zscaler | 0% | 30 | 13d degraded 17d partial |
| Twilio | 0% | 30 | 30d degraded |
| Palo Alto Cortex Cloud | 0% | 30 | 30d degraded |
| Palo Alto Cortex XDR | 0% | 30 | 30d degraded |
| Palo Alto Cortex XSIAM | 0% | 30 | 30d degraded |
| Palo Alto Prisma Access | 0% | 30 | 30d degraded |
| Palo Alto Prisma Cloud | 0% | 30 | 29d degraded 1d major |
| Palo Alto Strata Cloud Manager | 0% | 30 | 30d degraded |
Most Consistently Clear Services
| Service | Issue-Free Days | Days Tracked |
|---|---|---|
| Cribl | 100% | 30 |
| CrowdStrike | 100% | 30 |
| Okta | 100% | 30 |
| PagerDuty | 100% | 30 |
| Rubrik | 100% | 30 |
| Webex | 100% | 30 |
| Fastly | 100% | 30 |
| Google Cloud (GCP) | 100% | 30 |
| Salesforce | 100% | 30 |
| ServiceNow | 100% | 30 |
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