I don't think Apple should be worried. They are still relying on Samsung, just using TSMC as second source to keep pressure on Samsung for low price. Pretty standard technique almost every big fabless company uses this trick.
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.