Here is a bunch of links which I’m using in learning to AZ-203 (and AZ-204) exam:

• Exam homepage
• Learning path related to materials from Microsoft (long read)
• 50 minutes intro (overview) on Azure
• Whizlabs on the preparations
• Youtube videos with basic knowledge by Adam Marczak
• Azure for architectes by Ritesh Modi (Packt, Oct 2017) – intro level, waste of time for somebody who spent some time with cloud
• AZ-203 Developing Solutions for Microsoft Azure Exam Prep on Udemy by Scott Duffy
• https://github.com/MicrosoftLearning/AZ-204-DevelopingSolutionsforMicrosoftAzure/blob/master/Instructions/Labs/AZ-204_03_lab.md

I will update the list each time when I will find something which I consider valuable.

IMPORTANT UPDATE 1:

Microsoft announced changes to certification – AZ-203 will have update (AZ-204) – more here.

IMPORTANT UPDATE 2:

18th May 2020 – Microsoft announced changes to AZ-204. In general it is still very similar to AZ-203.

Main changes:

• remote access to VMs (jump server, bastion as a service)
• AKS is out of scope
• more server side on CosmosDB (including stored procedures) however overall % on storage has dropped by 5%
• RBAC

Details about changes can be found here.