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Azure DevOps vs serpstack

Same instrument, two spec sheets — measured, not claimed.

APIAzure DevOpsHEALTHY97serpstackHEALTHY93
Uptime · 30d
Uptime · 90d100%99.02%
Uptime · 30d100%98.3%
P50 · ms313492
P95 · ms8691442
AuthapiKeyapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Azure DevOps vs serpstack: common questions

Which is more reliable, Azure DevOps or serpstack?

On our scheduled checks, Azure DevOps leads on measured uptime — Azure DevOps at 100% versus serpstack at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Azure DevOps or serpstack?

Azure DevOps has the lower median latency in our checks — Azure DevOps responds in 313 ms versus serpstack at 492 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Azure DevOps and serpstack need an API key?

Both ask you to authenticate — Azure DevOps uses an API key and serpstack uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call Azure DevOps and serpstack from the browser?

Neither sends browser-friendly CORS headers reliably, so call Azure DevOps and serpstack from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Azure DevOps and serpstack free for commercial use?

Azure DevOps has unclear commercial terms, and serpstack has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.