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What is LTI?

LTI (Learning Tools Interoperability) is an IMS specification for integrating learning tools with an LMS (such as Moodle, Sakai, Blackboard WebCT or Desire2Learn).  Learning tools are known as "Tool producers" and LMSs are referred to as being "Tool consumers".  Tool producers could be in-house or on third-party servers.  A tool producer could be, for example, alternative discussion boards, wikis, blogs and other innovative learning applications.  A tool consumer is typically a LMS but could be any system which wishes to connect its users to a variety of other tools.

Basic LTI (released in February 2010) provides a mechanism for single sign-on between the systems passing data about the user and their context (e.g. course).  Using this model, tool producers can allow contexts to be shared between users from different tool producers thereby enabling new dimensions to student collaborations.  The vision for Full LTI is to provide greater integration with 2-way communication of data between the servers.  This would provide a simpler registration mechanism and, for example, the ability to synchronize rosters, return grades, etc.