What is the best design approach to call subsequent Web API's one by one where the second API depends on the response of previous API call using Angular 2+ frameworks.

What are the popular use cases for Machine Learning/AI in Business?

What are the use cases are required in business using ML or AI programming. So that I can looking at how to build applications to resolve those problems?

Can you please share your views on key trends you see in the Web User Experience Trends for 2017?