Currently Microsoft offers the following exams for Azure:
Exam 70-532 – Developing Microsoft Azure Solutions
Exam 70-533 – Implementing Microsoft Azure Infrastructure Solutions
Exam 70-534 – Architecting Microsoft Azure Solutions
Exam 70-473 – Designing and Implementing Cloud Data Platform Solutions
Exam 70-475 – Designing and Implementing Big Data Analytics Solutions
A new certification for Azure Stack is coming in Q1 2018 and for those that want to prepare for it, they can follow Course 20537A.
Is it normal though that we have so many exams for Azure? Well Azure is continuously evolving and there is need for new exams to cover new subjects. Also the exams are getting updates as there are new services added, others retired and others improved. I guess soon classic services will disappear and the exams will need to get updated again.
Also if you have taken Microsoft certifications you might have noticed that for some parts the exams “overlap”. So for example if you want to go after both 70-533 and 70-534, it is best to study for both of them and give the exams together. Same goes for example for Windows Server 2016. Although it is split in 3 parts, you will still get networking questions in 70-740 although 70-741 is the networking exam.
You can get free online training for Azure by Microsoft at: https://azure.microsoft.com/en-us/training/learning-paths/azure-administrator/
Make sure you click the links on the page depending on the path you want to follow (Azure Administrator, Azure Stack Operator etc.)