It is really interesting how that article is still valid.
When you have done the homework and selected a good low-power chip already, you must address the energy-efficiency techniques you describe to preserve your Coulombs.
Writing software thinking about Energy-Delay Product is not something that is usual, though. One has to change the way of thinking about accesses, classes and external memory.
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.