Expected AD0-E720 Exam Topics, as suggested by Adobe :

• Module 1: Understand the difference between extending/merging and overriding XML/ Demonstrate how to Module pass and utilize arguments to templates
• Module 2: Demonstrate the usage of basic bin/Magento commands/ Differentiate the appropriate use case for deploy modes
• Module 3: Describe Adobe Commerce theme folder structure and how it relates to folder based themes/ Demonstrate ability to extend existing themes
• Module4: Demonstrate the ability to style emails/ Demonstrate the ability to implement and customize LESS library components
• Module 5: Demonstrate the ability to implement different types of mixins/ Demonstrate the ability to customize Page Builder content
• Module 6: Demonstrate the ability to override or extend Magento LESS/ Demonstrate the ability to utilize Module7: Demonstrate the usage of JS components using Layout XML/ Demonstrate the ability to initialize and call JavaScript components
• Module 8: Distinguish use cases for different JavaScript components/ Identify the differences between client-side vs server-side compilation and how it works