[SLIs and SLOs versus NFRs | Mark Rendell](https://markosrendell.wordpress.com/2019/06/05/slis-and-slos-versus-nfrs/)
- [[SLO]]は[[非機能要件|NFR]]のサブセット
- すべてのSLOはNFRとして記録されるべきだが、生産現場で継続的に測定できるNFRのみが適切なSLOとなる
- バリデーション頻度は、指標によってまちまち
<blockquote class="twitter-tweet" data-theme="dark" data-dnt="true" align="center"><p lang="en" dir="ltr">SLA, SLI, SLO, NFR are are not the fancy words to write for the sake of writing on a test plan or something to not to know about appropriately. Understand the terminologies related to targets and performance tests and engineering. Says <a href="https://twitter.com/kaushald?ref_src=twsrc%5Etfw">@kaushald</a> at <a href="https://twitter.com/hashtag/FailQonf?src=hash&ref_src=twsrc%5Etfw">#FailQonf</a> <a href="https://t.co/cniFyCl3wA">pic.twitter.com/cniFyCl3wA</a></p>— Sandeep Garg (@testanalystat) <a href="https://twitter.com/testanalystat/status/1401525938509082629?ref_src=twsrc%5Etfw">June 6, 2021</a></blockquote>
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