You need to design a business logic using server-side components. 
Please select all components that can operate on a server-side.

Answer options:

A.Plug-ins
B.Canvas app component
C.Business rules
D.Automated flow
E.Business process flow

Correct Answers: A, C and E 
Power Platform provides a variety of tools to extend the platform and user experience. If you need to work with the Dataverse, you can use Dataverse Web API and Organization service. Or develop your business logic by using the Dataverse plug-ins. You can use Data import, Synchronization, Virtual entities, Azure integration, and Webhooks for integration purposes. 
For business logic execution “behind the scenes,” you need to use the Power Platform components and extensions that run on the server-side. Such components are: The business rules
The business process flows
Real-time classic workflows
Plug-ins.
All these components facilitate the Dataverse data operations. Even some of them have client-side operations also, like business rules and business process flow. These components can operate asynchronously, like plug-ins or classic workflows, and synchronous, like plug-ins and business rules. Options B and D are incorrect because canvas app components and automated flow are not the server-side components.
For more information about the use of the Dataverse server-side business logic components, please visit the below URLs: 

https://docs.microsoft.com/en-us/powerapps/maker/data-platform/work-with-any-type-app
https://docs.microsoft.com/en-us/powerapps/user/work-with-business-processes
https://docs.microsoft.com/en-us/learn/modules/define-create-business-rules/1-rules
https://docs.microsoft.com/en-us/powerapps/developer/data-platform/apply-business-logic-with-code