There are various materials available for training
On Microsoft Learn, http://aka.ms/LearnDynamics
- Dynamics 365 and Power Platform Fundamentals learning path has 5 modules covering much of the exam
- Cloud Concepts – Principles of cloud computing module that covers the Azure and Cloud topic
There is a Microsoft Official Course, MB-900T01, which is available from various learning partners and is also on OpenEdX.
The other source of learning is Microsoft Docs https://docs.microsoft.com/dynamics365
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