* Learning Tools Interoperability,thenformerly called BasicLTI, was originated in 2008 as a [[Google Summer of Code]] project. It was developed by Jordi Piguillem under the mentorship of [[Charles Severance (computer scientist)|Charles Severance]] and Marc Alier.<ref>{{cite web|url=https://code.google.com/p/basiclti4moodle/ |title=basiclti4moodle - Implements a IMS BasicLTI Consumer for Moodle - Google Project Hosting |date=2012-07-02 |accessdate=2015-09-07}}</ref>
*In June 2010, LTILearning v1Tools Interoperability version 1.0 was finalized.<ref>{{cite web|url=http://www.imsglobal.org/lti/index.html#lti1.1 |title=Learning Tools Interoperability® |publisher=IMS Global |date= |accessdate=2015-09-07}}</ref>
*In August 2012, LTILearning v1Tools Interoperability version 1.1 addedintroduced thea abilityfeature for theallowing external tooltools to passsend gradesgrade results back to the invokingoriginating learning system.<ref>{{cite web|url=http://www.imsglobal.org/LTI/v1p1p1/ltiIMGv1p1p1.html |title=IMS Global Learning Tools Interoperability Implementation Guide Version 1.1.1 |publisher=Imsglobal.org |date= |accessdate=2015-09-07}}</ref>
*In January 2014, LTILearning v2Tools Interoperability version 2.0 was releasedlaunched, providingintroducing [[Representational state transfer|REST]]-based two-way communication between the external tooltools and the invokinglearning platform.<ref>{{cite web|url=http://www.imsglobal.org/lti/ltiv2p0/ltiIMGv2p0.html |title=IMS Global Learning Tools Interoperability Implementation Guide Version 2.0 Final |publisher=Imsglobal.org |date= |accessdate=2015-09-07}}</ref> At the same timeSimultaneously, a subset of v2version 2.0 was released as v1version 1.2, as a steppingtransitional stoneupdate betweenfrom v1 version 1.1 andto v2version 2.0.
*Due to their complexity, adoption of LTILearning v1Tools Interoperability version 1.2 and v2version 2.0 was slow. Consequently, and IMS GLCGlobal subsequentlylearning declaredconsortium reclassified them to beas "legacy"“legacy specifications", notadvising inagainst theupgrading recommendedfrom upgradeLearning pathTools fromInteroperability LTIversion v11.1,citingdue to security concerns.
* In May 2019, the IMS Security Framework and LTILearning v1Tools Interoperability version 1.3 were published, based on [[OAuth2]], [[OpenID Connect]], and [[JSON Web Token|JWT]]. LTILearning v1Tools Interoperability version 1.0, v1version 1.1, v1version 1.2 and v2version 2.0 were all deprecateddepreciated.<ref>{{cite web|url=https://www.imsglobal.org/lti-adoption-roadmap |title=Recommended LTI Adoption Roadmap and FAQ |publisher=Imsglobal.org |date= |accessdate=2018-06-07}}</ref>
