Indeed they come in late to a crowded field, don't forget about Intel's Linux flavor for mobile, Tizen. So looks like many are trying to compete with their Linux distro in the embedded market.
Ubuntu is strong at servers and Desktop I think has some popularity... Perhaps having the same OS at these 3 nodes will enable killer functionality?!
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.