t3i.org
Institutes and initiatives tend toward compact naming once their full title gets unwieldy, and most discover the good short addresses went long ago. The ones still available move quietly.
T3I is three characters in the letter-digit-letter shape, reading cleanly and typing fast. No entrenched meaning, which leaves it open: technology, transformation or training on the T; innovation, institute or intelligence on the I. Those are among the most common words in institutional naming.
The .org does specific work. On a commercial extension a three-character string reads as a startup; here it reads as a body whose formal name people have shortened, which is a useful impression for a research centre, a standards group or a foundation.
Fits on reports, badges, footers, partner slides, and email addresses people get right first time.
The name is listed. Enquiries welcome.