[{"data":1,"prerenderedAt":89},["ShallowReactive",2],{"content:\u002Fglossary\u002Fsla":3,"related:\u002Fglossary\u002Fuptime,\u002Ftools\u002Fuptime-sla-calculator,\u002Ftools\u002Fhow-much-downtime-is-99-9-percent":77},{"id":4,"title":5,"body":6,"category":61,"description":62,"extension":63,"faq":64,"h1":65,"meta":66,"navigation":67,"path":68,"published":69,"readingMinutes":70,"related":71,"seo":74,"stem":75,"updated":69,"__hash__":76},"glossary\u002Fglossary\u002Fsla.md","What is an SLA?",{"type":7,"value":8,"toc":53},"minimark",[9,13,18,21,25,28,32,41,45],[10,11,12],"p",{},"An SLA, or service level agreement, is a written commitment about the level of service a provider will deliver. For websites it is most often an uptime percentage, with a description of how it is measured and what the customer gets if it is missed.",[14,15,17],"h2",{"id":16},"what-does-an-sla-usually-contain","What does an SLA usually contain?",[10,19,20],{},"A target such as 99.9% uptime, the window it is measured over, how downtime is defined, which events are excluded such as planned maintenance, how the customer reports a problem and the remedy, often a credit on the bill. The details decide whether the number means anything.",[14,22,24],{"id":23},"what-is-the-difference-between-sla-slo-and-sli","What is the difference between SLA, SLO and SLI?",[10,26,27],{},"An SLI is a measurement, for example the share of successful requests. An SLO is an internal target for that measurement. An SLA is the external promise, with consequences, and is normally set looser than the internal target so there is room for error.",[14,29,31],{"id":30},"should-i-offer-an-sla-to-a-client","Should I offer an SLA to a client?",[10,33,34,35,40],{},"Only if you can measure it and your hosting can deliver it. A vague promise of 99.9% without a definition invites an argument. See the ",[36,37,39],"a",{"href":38},"\u002Ftools\u002Fuptime-sla-calculator","uptime and SLA calculator"," for what each level allows.",[14,42,44],{"id":43},"where-datumboard-fits","Where Datumboard fits",[10,46,47,48,52],{},"Datumboard puts the signals behind this in one dashboard for your client sites and side projects. It is in early access, and you can ",[36,49,51],{"href":50},"#early-access","join the list below",".",{"title":54,"searchDepth":55,"depth":55,"links":56},"",2,[57,58,59,60],{"id":16,"depth":55,"text":17},{"id":23,"depth":55,"text":24},{"id":30,"depth":55,"text":31},{"id":43,"depth":55,"text":44},"Contracts","An SLA is a written promise about the level of service you will provide, often an uptime percentage, how it is measured and what happens if it is missed.","md",[],"What is an SLA (service level agreement)?",{},true,"\u002Fglossary\u002Fsla","2026-10-12",3,[72,38,73],"\u002Fglossary\u002Fuptime","\u002Ftools\u002Fhow-much-downtime-is-99-9-percent",{"title":5,"description":62},"glossary\u002Fsla","Q_jEjBEmwBrdHdFNKAHV4HO-l415uGrlW6vINBrcb5s",[78,82,86],{"title":79,"description":80,"path":72,"category":81},"What is uptime?","Uptime is the share of time a website or service is available, usually shown as a percentage such as 99.9%. Learn how it is measured and what it allows.","Uptime",{"title":83,"description":84,"path":38,"category":85},"Uptime and SLA calculator (free)","Turn an uptime percentage into the downtime it allows per day, week, month and year, or work out the uptime you actually had from minutes of downtime.","Free tool",{"title":87,"description":88,"path":73,"category":81},"How much downtime is 99.9% uptime?","99.9% uptime allows 8 hours 45 minutes 36 seconds of downtime a year and 43 minutes 48 seconds a month. See what three nines means for your site.",1791830037171]