I have cleared AZ 103 certification in Jan 2020 successfully & this will help us to understand the functionality of Azure.
There are lot of topics which need to cover for AZ103 Exam. I have gone through Udemy Course as well.
However Microsoft announced that from Mar 2020 , AZ103 will replace to AZ104.
some different topics which requires attention:
What is Azure Policy
Azure Subscription
Azure Baseline Resource
Azure Storage
Storage Explorer
Redundant Storage
blob storage
azure backup
power shell – AZVM
virtual networks – subnet
route table
express route
Network Security Groups
conditional access
AD identity protection
access review
azure AD connect
create custom role (power shell & CLI)
Network performance monitor
network watch – https://azurecitadel.com/infra/vdc/lab4/
Some LABS –
https://www.microsoft.com/handsonlabs/selfpacedlabs/details/SP-AZ100059
https://www.microsoft.com/handsonlabs/selfpacedlabs/details/AZ00034
https://www.microsoft.com/handsonlabs/selfpacedlabs/details/SP-AZ100002
OpenDX course – Very useful
https://openedx.microsoft.com/courses/course-v1:Microsoft+AZ-103.1+2019_T2/course/
you can find the good information here –