I don't agree that Class AB has a high output impedance. If it is a source (emitter) follower output design, the ZOUT is low, then made even lower by the loop gain. If the output is common source (emitter), then the ZOUT statement is true.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.