// how much downtime is

99.99% uptime = 52.6 min down per year.

That's 4.0 nines. Allowed downtime at 99.99% availability:

per year52.6 min

per month4.4 min

per week1.0 min

per day9 s

The neighborhood

what one more nine buys you

90%36.5 days/yr

99%3.7 days/yr

99.5%43.8 h/yr

99.9%8.8 h/yr

99.95%4.4 h/yr

99.99% ← you are here52.6 min/yr

99.995%26.3 min/yr

99.999%5.3 min/yr

Azure services live at specific rungs of this ladder — see the SLA dataset, or compute the composite for your whole environment from one Resource Graph query.

ⓘ Designed availability, not a guarantee.