When we moved “online” at UM-Dearborn “all of a sudden” on 13 March 2020, the winter courses were finished synchronously, and more by default than anything else, I used Canvas Conferences — the most immediately available alternative right from the Canvas menu. The software seemed unstable; I often had to restart a class session. When I started teaching one course (IMSE 510, master’s-level engineering statistics) May-June, all courses became asynchronous. I have been using Zoom, which has worked well for “office hours” and also for the occasional student who, very puzzled by a concept or problem, would like a one-on-one “meeting.” Very helpfully, emails about Zoom-bombing alerted me to use its waiting-room capability. Other instructors like Blue Jeans; I would be interested in hearing their reasons and comparative merits of Blue Jeans and Zoom. I do plan to use Zoom similarly July-August (DS 520, statistics, and DS 632, system simulation; both master’s-level Business Analytics courses).