[pas]

LTI is an afterthought for LMSes.

The standard is a classic patchwork of whatever is used by IMS members currently.

LTI 1.3 is the current active version, which deprecated 2.0.

But wait LTI is actually a collection of standards. AGS (assignment and grade services), DL (deep linking), dynamic registration, etc.

And they are optional, and LMSes implement them in slightly different ways.

So good times.

But wait, there's also the afterthought of 1.3 compatibility jury rigged on top of 1.0/1.1 implementations. Which leads to comical implementation details poking their ugly heads out :)