Sitecore is a web content management system

Web content management system

A web content management system is a software system that provides website authoring, collaboration, and administration tools designed to allow users with little knowledge of web programming languages or markup languages to create and manage website content with relative ease...

 software company that provides enterprise website, intranet, portal and marketing automation software. The company was founded in 2001 and has offices in Australia, Denmark, Sweden, Canada, Germany, Japan, Netherlands, United Kingdom, and United States.

Sitecore's software is built on Microsoft .NET 3.5. Content can be stored as XML or .NET objects and Sitecore CMS can leverage either Microsoft SQL Server

Microsoft SQL Server

Microsoft SQL Server is a relational database server, developed by Microsoft: It is a software product whose primary function is to store and retrieve data as requested by other software applications, be it those on the same computer or those running on another computer across a network...

 or Oracle Database

Oracle Database

The Oracle Database is an object-relational database management system produced and marketed by Oracle Corporation....

 for its database storage, though MS SQL Server is the most popular. Sitecore also allows deployment via Microsoft Azure.

The Sitecore Developer Network , also known as SDN, is a technical resource for developers and administrators. Software, product documentation and support forums are available on SDN. The Sitecore Shared Source library allows developers to distribute source code in its community.

Sitecore has received industry recognition including Red Herring Europe Top 100 , 2011 Forrester Wave WCM For Online Customer Experience , Web Marketing Association WebAward 2009, 2011 Gartner Magic Quadrant for Web Content Management, and EContent Magazine's Top 100 Companies that Matter Most.