In response to the demand for business-grade IM and the need to ensure security and legal compliance, a new type of instant messaging, called "Enterprise Instant Messaging" ("EIM") was created when Lotus Software launched Lotus Sametime in 1999. Microsoft followed suit shortly thereafter with Microsoft Exchange Instant Messaging, and later created a new platform called Microsoft Office Live Communications Server. Since then, both IBM Lotus and Microsoft have introduced federation between their EIM systems and some of the public IM networks thus employees may use a single interface to both their internal EIM system and their buddies on AOL, MSN, and Yahoo!. Current leading EIM platforms include IBM Lotus Sametime, Microsoft Office Live Communications Server, and Jabber XCP .