Something of interest in this week's API metrics
Corporate Infrastructure is a pretty competitive API metrics category, with all APIs in the Green Zone and 9 out of 19 having a CASC score of over 9.00. If we look at outliers, we see there is a pretty large between the best performer, GitHub, with just 0.48% outliers, which comes top overall in terms of CASC score, and Pager Duty with 4.87% outliers – ten times as many. The seven best APIs in terms of outliers all have a CASC API metrics score of 9.18 or higher. 
We can see that though there are variations between regions, GitHub is pretty consistent within regions. There is only a 19 ms variation in Europe and 16 ms one in South America, the slowest region. Consistency is the goal and if you can achieve that you will get a good CASC score. 
PagerDuty is a slower API overall, but there is also a lot more variation in latency: 187 ms in Europe, 314 ms in South America. North America has a variation of 116 ms. For GitHub, only East Asia has a bigger variation than that at 177 ms. We see here the difference between a good API and a very good one. And this is why you need to be actively monitoring your APIs from the locations your users are using them from. You want to be quick everywhere, but you – and your users - also want you to have consistent API metrics. 
API Metrics: Tops in Overall Quality
Week Ending 9 February 2021
Category
Organization
CASC score
Corporate Infrastructure
GitHub
9.61
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