What is SharePoint
Organizations use SharePoint to create websites. You can use it as a secure place to store, organize, share, and access information from almost any device. All you need is a web browser, such as Internet Explorer, Chrome, or Firefox.
SharePoint is a web application platform in the Microsoft Office server suite. Launched in 2001, SharePoint combines various functions which are traditionally separate applications: intranet, extranet, content management, document management, personal cloud, enterprise social networking, enterprise search, business intelligence, workflow management, web content management, and an enterprise application store. SharePoint servers have traditionally been deployed for internal use in mid-size businesses and large departments alongside Microsoft Exchange, Skype for Business, and Office Web Apps. However, Microsoft's 'Office 365' software as a service offering (which includes a version of SharePoint) has led to increased usage of SharePoint in smaller organizations.
While Office 365 provides SharePoint as a service, installing SharePoint on premises typically requires multiple virtual machines, at least two separate physical servers, and is a somewhat significant installation and configuration effort. The software is based on an n-tier service oriented architecture. Enterprise application software (for example, email servers, ERP, BI and CRM products) often either requires or integrates with elements of SharePoint. As an application platform, SharePoint provides central management, governance, and security controls. The SharePoint platform manages Internet Information Services (IIS) via form-based management tooling.
Since the release of SharePoint 2013, Microsoft's primary channel for distribution of SharePoint has been Office 365, where the product is continuously being upgraded. New versions are released every few years, and represent a supported snapshot of the cloud software. Microsoft currently has three tiers of pricing for SharePoint 2013, including a free version (whose future is currently uncertain). SharePoint 2013 is also resold through a cloud model by many third-party vendors. The next on-premises release is SharePoint 2016, expected to have increased hybrid cloud integration.
What is Office 365
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, 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.