The Nest Objective-C Sample Code by Nest demonstrates how to authorize with Nest client using OAuth 2.0. Developers can read Nest Thermostat devices using REST and update Nest Thermostat devices using REST.
Google has given developers more tools to control and manage the Google Assistant in myriad devices. In addition to new languages and countries, developers can take advantage of new device management APIs in order to let consumers exercise more control over their smart hardware.
Now-a-days every single CIO, CTO, or business executive that I speak to is captivated by these three new technologies: Big Data, API management and IoTs (Internet of Things). Every single organizational executive that I speak with confirms that they either have current projects that are actively using these technologies, or they are in the planning stages and are about to embark on the mission soon.