GitHub is a perennially performant API, which this week again tops the Corporate Infrastructure API metrics. Usually, though Microsoft Office is the fastest API in the category, but not this week with GitHub pipping it to the top spot. 
GitHub is an excellent API. It is 3 ms faster overall than Microsoft Office, but it has a 100% pass rate compared to 99.99% and just 0.54% outliers compared to 2.21%, which is why Microsoft Office overall languishes at 12 out of 19 in terms of our API metrics CASC score. 
GitHub is fast for DNS lookup Time – 4 or 12 ms everywhere, which is close to the ideal performance. Using an active API monitoring system will let you where the rate-determining steps are in your latency. 
Microsoft Office isn’t showing API metrics as good. It is getting a couple of 28 ms times, but more importantly 60 ms for Google in North America and 125 ms for IBM Cloud in North America and 253 ms in Oceania. Through active monitoring of all of your API metrics, you can see just where your performance is being affected. You cannot assume that just because things are working well from one cloud or region, they will be working well from all of them. It’s these variations that make the difference between good performance and best in class performance. 
GitHub has some significant API metrics variations in Handshake Time. Here Oceania is faster than North America and South America is by far the slowest region. Rectifying the causes of this discrepancy will make GitHub an even better API. 
API Metrics: Tops in Overall Quality
Week Ending 15 February 2021
Category
Organization
CASC score
Corporate Infrastructure
GitHub
9.62
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