Three characters, .org, X-to-Y. T2E reads as training to employment, which is one of the most commonly funded programme types in the world.
Workforce development, vocational training, apprenticeships, and reskilling programmes all describe themselves as pathways from training into a job, and public money flows into that space continuously in every developed economy. An organisation, platform, or coalition named for exactly that transition gets a name its funders already use.
Other readings work: theory to execution, text to embedding for anyone in the AI space, transport to energy for the electrification sector.
The training-to-employment reading is the one that fits the extension best, and it’s the one with institutional buyers. The X-to-Y form is well suited to describing a pathway, which is what these programmes are, and three characters is a good length for something that appears on certificates and funding documents.
The name is available. Offers welcome.