The document discusses IMS Learning Tools Interoperability (LTI), an educational standard that allows external applications to be securely integrated into online learning systems. It provides an overview of LTI versions including 1.0, 1.1, and the upcoming 2.0, outlining their key features around basic tool launching, grade return, and improved tool registration respectively. It also mentions the adoption of LTI and IMS Common Cartridge standards by various learning management systems and tool vendors.