If you need to buy dev. kits, Arrow shows that they have 41 at $28.71 and Digikey now has 871 in stock as well for $33.60.
You can't see them if you follow the link provided for the related ST.com website, but if you go to Digikey .com dirrectly and search for STM32F429I-DISCO, then you can see the dev boards stock available.
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.