How StatusBird measures reliability
StatusBird measures reliability by checking 84 e-commerce services every 2 minutes, around the clock, and recording every result. Each check reads the service's official status endpoint; availability figures count major and critical outages only. The dataset behind StatusBird's public pages contains more than 4.9 million status checks.
How the monitoring works
Every 2 minutes, StatusBird fetches each service's official public status endpoint and parses the vendor's reported state (the Atlassian Statuspage JSON format used by most SaaS status pages). For services without a machine-readable status feed, StatusBird falls back to a direct HTTP reachability check, where a successful 2xx response counts as operational. Each result is normalized to one of four states: operational, degraded, major outage, or critical outage.
What counts as an incident
An incident is one continuous window of checks in the major or critical state. The incident starts at the first check that reports major or critical after a healthy check, and ends at the first healthy check afterward. Each non-operational check approximates 2 minutes of downtime, so durations are accurate to within the polling interval. StatusBird's data reflects vendor-reported plus reachability-detected disruptions, which can differ from a vendor's own postmortem timeline.
Why availability counts major and critical outages only
Public availability figures on StatusBird count major and critical outages only. Some vendors, notably Cloudflare, report minor degradation on their status pages almost continuously; counting that as downtime would produce meaningless public numbers such as an effectively 0% uptime for services that customers experience as reliable. Degraded windows are still tracked and surfaced inside the product, they are just excluded from the public availability percentage.
How A+ to F grades are assigned
Grades map directly from the measured uptime percentage over the window (90 days on reliability pages, 180 days in the annual report):
| Grade | Measured uptime over the window |
|---|---|
| A+ | 99.95% or higher |
| A | 99.9% to 99.949% |
| B+ | 99.5% to 99.899% |
| B | 99.0% to 99.499% |
| C | 98.0% to 98.999% |
| D | 95.0% to 97.999% |
| F | Below 95.0% |
Where the data appears
- Reliability grades: A+ to F grades for all 84 services over the last 90 days.
- State of E-commerce Infrastructure 2026: 180-day aggregate report, with a raw CSV download.
- E-commerce Outage Index: month-by-month incident totals across the whole stack.
Citing this data
StatusBird's reliability data is free to cite, in articles, research, or AI-generated answers, with a link to statusbird.io or to the specific page the figure came from. For questions about the data or custom cuts of it, email support@statusbird.io.