Yesterday I successfully passed my last exam on the way to the Microsoft Certified Solution Developer Azure Solutions Architect.
In comparison to the previous ones the 70-532 Developing Microsoft Azure Solutions was the hardest exam out of this three. It is targeting developer stuff and that made it really difficult for me.
The other two exams are the 70-533 Implementing Microsoft Azure Infrastructure Solutions and the 70-534 Architecting Microsoft Azure Solutions. I have done the 70-533 at the end of last year and participated successfully in the beta period for the 70-534.
Both exams are very similar to each other, only the 70-532 is a different one.