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Office 365, like BPOS, is currently available in three flavors: Standard (S), Dedicated (D) and Federal (F). It isn't doing so within the coming year, Kelly said, but "we expect one more generation of Dedicated, and then ultimately think (almost) all our customers are likely to go S (Standard)." Microsoft is so confident that it is multitenant-ready that it is planning to phase out over the next couple of years the Office 365-D (Dedicated) SKU.
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The move to the common Online Service Delivery Platform (OSDP) core - something that's already underway - also will make the overall Office 365 platform more dependable and resilient, Kelly said.
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Kelly said Microsoft has come a long way in the past few years in understanding how to develop and keep running a scalable multitenant system - how to engineer it, provision it, fix it, etc. Microsoft has been testing its hosted Exchange platform "at very high scale" as part of its hosted offering for academia, Kelly noted. But Exchange 2010 is the core of the Exchange Online pillar in Office 365, and it was designed "from the get-go as multitenant," Kelly said during an interview at Microsoft's June 28 Office 365 launch in New York.
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The version of Exchange Online that was in BPOS was derived from the old Exchange 2007 code base, he said, and wasn't built from the ground up to be a multitenant platform. Many of the issues around BPOS' downtime were due to Exchange Online, acknowledged Eron Kelly, Senior Director of Product Management for Microsoft Online Services and Office 365. There have been a number of lengthy outages and glitches, including one last week, just a week before the launch of Office 365, the successor to BPOS.īut Microsoft officials believe Office 365 will be more resilient than BPOS for a number of reasons - especially because of changes that Microsoft is making to the Exchange Online component of the cloud platform. This year hasn't been a great one for Microsoft's hosted application bundle, known as Business Productivity Online Suite (BPOS), in terms of uptime. 41 impressive questions to ask in a job interview