High Availability (HA) is an interesting subject that I am tracking as part of my journey in OD (On-Demand) market of ISVs. Alot of questions are raised when this discussion take place, for exmaple –

Are there any industry standards? Does 4 nines, counted as a HA or should the ISV support 5 nines ? Is that include an additional fee ? How does an ISV will be able to support 5 nines?  How many nines does a cloud provider really support? can it be obligated to 100% uptime? …etc.

Click here to read this optimistic article brough to you by NYTimes, provide Urs Hölzle, senior vice president for operations at Google, insights.