MS Office comes with an array of apps and services, each intended for a unique use. The most popular and widely used Office apps comprise Word, Excel, PowerPoint, Outlook, OneDrive, etc. When Microsoft launched the first productivity suite, it merely consisted of three basic apps: Word, Excel, and PowerPoint. Over the years, several apps have been added and removed to the package. Microsoft Office Setup is a bundle that consists of client as well as software server, and it also comprises services. The main features of MS office 365 are the robust security and reliability. Microsoft is trying to provide new proactive security capabilities and features to Office 365. Microsoft announced new security features of MS office 365 on 10th February 2017 and it includes, MS Office 365 secure score, MS Office 365 Advanced Data Governance Preview and Office 365 Threat Intelligence Private Preview. Using secure score tools you can measure the security level.