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Office 365 is the brand name used by Microsoft for a group of software plus services subscriptions that provides productivity software and related services to its subscribers. For consumers, the service allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. For business and enterprise users, Office 365 offers plans including e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. After a beta test that began in October 2010, Office 365 was launched on June 28, 2011,〔(【引用サイトリンク】url= http://www.pcmag.com/article2/0,2817,2386447,00.asp )〕 as a successor to Microsoft Business Productivity Online Suite (MSBPOS), originally aimed at corporate users. With the release of Microsoft Office 2013, Office 365 was expanded to include new plans aimed at different types of businesses, along with new plans aimed at general consumers wanting to use the Office desktop software on a subscription basis—with an emphasis on the rolling release model.〔 == History == Microsoft first announced Office 365 in October 2010; beginning with a private beta with various organizations, leading into a public beta in April 2011, and reaching general availability on June 28, 2011. Facing growing competition from Google's similar service Google Apps, Microsoft designed the Office 365 platform to "() together" its existing online services (such as the Business Productivity Online Suite) into "an always-up-to-date cloud service" incorporating Exchange Server (for e-mail), SharePoint (for internal social networking, collaboration, and a public web site), and Lync (for communication, VoIP, and conferencing). Plans were initially launched for small business and enterprises; the small business plan offered Exchange e-mail, SharePoint Online, Lync Online, web hosting via SharePoint, and the Office Web Apps, with the enterprise plan also adding per-user licenses for the Office 2010 Professional Plus software and 24/7 phone support.〔(【引用サイトリンク】url=http://www.networkworld.com/news/2010/101810-microsoft-office-365.html )〕 Following the official launch of the service, Business Productivity Online Suite customers were given 12 months to plan and perform their migration from BPOS to the Office 365 platform.〔(【引用サイトリンク】url=http://www.pcworld.com/article/231220/article.html )〕 With the release of Office 2013, an updated version of the Office 365 platform was launched on February 27, 2013. The server components were updated to their respective 2013 versions, and Microsoft expanded the Office 365 service with new plans, such as Small Business Premium, Midsize Premium, and Pro Plus. A new Office 365 Home Premium plan aimed at home users was also introduced; the new plan offers access to the Office 2013 suite for up to five computers, along with expanded OneDrive storage and 60 minutes of Skype calls monthly. The plan is aimed at mainstream consumers, especially those who want to install Office on multiple computers. A University plan was also introduced, targeted towards users going to post-secondary education. With these new offerings, Microsoft began to offer prepaid Office 365 subscriptions through retail outlets alongside the normal, non-subscription-based editions of Office 2013, which, in comparison, are only licensed for use on one computer.〔 On March 19, 2013, Microsoft detailed its plans to provide integration with the enterprise social networking platform Yammer (which they had acquired in 2012) for Office 365: such as the ability to use a single sign-on between the two services, shared feeds and document aggregation, and the ability to entirely replace the SharePoint news feed and social functionality with Yammer.〔(【引用サイトリンク】url=http://news.cnet.com/8301-1001_3-57575193-92/office-365-and-yammer-integration-whats-coming/ )〕 The ability to provide a link to a Yammer network from an Office 365 portal was introduced in June 2013, with heavier integration (such a Yammer app for SharePoint and single sign-on) to be introduced in July 2013.〔(【引用サイトリンク】url=http://www.computerworlduk.com/news/cloud-computing/3452158/office-365-customers-can-replace-sharepoint-newsfeed-with-yammer/ )〕 On July 8, 2013, Microsoft unveiled Power BI, a suite of business intelligence and self-serve data mining tools for Office 365, to be released later in the year. Power BI is primarily incorporated into Excel, allowing users to use the Power Query tool to create spreadsheets and graphs using public and private data, and also perform geovisualization with Bing Maps data using the Power Map tool (previously available as a beta plug-in known as GeoFlow). Users will also be able to access and publish reports, and perform natural language queries on data.〔(【引用サイトリンク】url=http://www.cio.com/article/736026/Microsoft_Makes_Data_Mining_Self_Service_With_BI_for_Office_365 )〕〔(【引用サイトリンク】url=http://www.pcworld.com/article/2043844/microsoft-adds-business-intelligence-to-office-365.html )〕 As a limited time offer for certain markets (but notably excluding the U.S.), Microsoft also announced that those who purchased an Office 365 Home Premium or University subscription before September 28, 2013 would receive a free one-year Xbox Live Gold subscription.〔(【引用サイトリンク】url=http://thenextweb.com/microsoft/2013/07/18/microsoft-will-throw-in-12-months-of-xbox-live-gold-for-free-if-you-buy-an-office-365-subscription/ )〕 In March 2014, Microsoft announced that it would rename the "Home Premium" plan to "Home", and add a new "Personal" plan for single users; these new options officially launched on April 15, 2014.〔(【引用サイトリンク】url=http://www.pcworld.com/article/2107941/microsoft-adds-personal-office-365-subscription.html )〕〔(【引用サイトリンク】url=http://www.cnet.com/news/microsoft-releases-office-365-personal-for-ipad-too/ )〕 In June 2014, the amount of OneDrive storage offered to Office 365 subscribers was increased to 1 terabyte from 20 GB.〔(【引用サイトリンク】url=http://www.theverge.com/2014/6/23/5833808/onedrive-free-storage-increase-pricing-productivity-war )〕 On October 27, 2014, Microsoft announced that Office 365 subscribers would receive "unlimited" OneDrive storage.〔(【引用サイトリンク】url=http://www.theverge.com/2014/10/27/7078397/microsoft-unlimited-onedrive-storage-office-365 )〕 Due to abuse and a general reduction in storage options implemented by Microsoft, the 1 TB cap was reinstated in November 2015.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Office 365」の詳細全文を読む スポンサード リンク
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