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LTI stands for Learning Tools[br]Interoperability.

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It's a standard developed to facilitate[br]intercommunication of learning software.

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Most websites nowadays are very complex

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and they're usually based [br]on several different separate services.

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LTI allows you to play mix and match [br]with those services.

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For instance, for a Coursera course, [br]as an instructor,

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you can say that you don't like the forums

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and want to change them to something else.

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There's this other website, say Piazza,[br]that you like better,

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and you find has better forums.

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You'd like to use that tool, but typically,

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you don't want your users to create[br]multiple accounts,

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one for Coursera and one for Piazza.

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In this case, what you can do [br]is to use LTI

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and set up Coursera as the tool consumer.

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LTI then does all the authentication for you,

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so the students only have to remember [br]one password.

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As an instructor, you have to set up some[br]keys and password,

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but then, to the students, everything[br]appears integrated into one website

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and they don't need these extra passwords.

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Sometimes though, the effect is not so great.

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LTI does not change [br]the visual appearance of the forums,

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so the effect might be a bit odd on the eyes.

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In addition, LTI maintains roles.

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For instance, in Coursera, [br]I'm the instructor,

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which means I can see more information [br]about the students and things like that.

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LTI knows to preserve that, so I also[br]automatically have more rights

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in the LTI tool that I have installed.

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Finally, LTI can also allow more interaction[br]with the original LTI consumer.

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For instance, the LTI tool can return a grade [br]that will be used back in the consumer.