The FTA TAM Program organizes biannual discussion forums to support professional capacity building for transit agency staff. Discussion forums bring together a small group of transit professionals to engage virtually on topics that go beyond the requirements in the TAM Rule (49 CFR 625). The Spring 2023 Discussion Forum focused on TAM considerations for zero-emission bus (ZEB) fleets. Participants were transit agency staff who manage transit assets or otherwise contribute to fleet management planning and related practices. This document highlights the main successes and challenges in transitioning to ZEBs as described by participants and summarizes perspectives shared during the facilitated discussion.