Answer is C When your Office 365 and Dynamics 365 are in different tenants it becomes quite the challenge and inconvenience. A few major issues are as follows Server-Side Sync – only supports single tenant. Single sign-on – need to log into two systems. https://bethb-d365.com/2018/06/13/dynamics-365-and-office-365-in-different-tenants-how-to-consolidate/#post-39:~:text=When%20your%20Office%20365%20and%20Dynamics,need%20to%20log%20into%20two%20systems.

What is the difference between this and Question 8?

Yes, I am right. Option B and C are incorrect. The documentation does not mention either of these benefits, so they are not valid benefits of deploying Microsoft 365 and Dynamics 365 apps in the same tenant. Therefore, the correct answer to the question is option A only. (As per Bard)

A. Use Common Data Services to connect to application data. The benefit of deploying Microsoft 365 and Dynamics 365 apps in the same tenant is that you can leverage the Common Data Service (CDS) to connect to application data. Common Data Service is a cloud-based data storage and management service provided by Microsoft that allows you to securely store and integrate data from various sources, including Microsoft 365 and Dynamics 365 apps.

Answer is C

C - with SSO, the user has access to both without having to be authenticated separately, enhancing user experience by simplifying access and improving security and efficiency

The answer is C. Users can access both Microsoft 365 and Dynamics 365 by using Single Sign-on (SSO). Option A: Use Common Data Services to connect to application data. Common Data Services is a cloud-based database that can be used to store and manage data for Power Platform apps. It is not a requirement for deploying Microsoft 365 and Dynamics 365 apps in the same tenant. Option B: You only need to set up groups in Microsoft 365 for permissions to all data. This is not always the case. Depending on the specific configuration, you may need to set up groups in both Microsoft 365 and Dynamics 365 for permissions to all data.

mainly C ChatGPT 4.0: and supporting information for why C trumps A&B: Supporting Information: Common Data Service (now called Dataverse): While using Dataverse (formerly known as Common Data Service) to connect application data is a significant advantage, it is not the primary benefit directly related to deploying these applications within the same tenant. Group Permissions: Setting up groups in Microsoft 365 for permissions can streamline some processes, but it does not capture the comprehensive benefit of SSO.

CoPilot leans towards C - Using a single tenant simplifies user access management, license admin and resource sharing acros both platforms.

notice it says "deploying" and “in same tenatent” Compared to opt. A and C. Where C :
Although Single Sign-On (SSO) simplifies user access to both Microsoft 365 and Dynamics 365, it's not exclusive to deploying the apps in the same tenant; it can be implemented even if the apps are in separate tenants While A:
on the other hand, specifically highlights the capability of leveraging Common Data Services (CDS) when the apps are deployed in the same tenant, which enables seamless integration and data sharing. Therefore, option A is more directly related to the benefits of deploying both sets of apps in the same tenant. 💡Answer: A

C might also be an option, but A is the most critical one than C

A significant benefit of deploying Microsoft 365 and Dynamics 365 apps in the same tenant is: Answer: C. Users can access both Microsoft 365 and Dynamics 365 by using Single Sign-On (SSO). Explanation: When Microsoft 365 and Dynamics 365 are deployed within the same tenant, they leverage the same Azure Active Directory (AAD) for identity management. This shared identity service enables Single Sign-On (SSO), allowing users to authenticate once and gain access to both Microsoft 365 and Dynamics 365 applications without needing to log in separately for each service. SSO simplifies the user experience, enhances productivity by reducing the time spent on multiple logins, and improves security by centralizing identity management.

I think Correct one is C as per the Question

C. Users can access both Microsoft 365 and Dynamics 365 by using Single Sign-on (SSO).

C. Deploying Microsoft 365 and Dynamics 365 apps in the same tenant allows for Single Sign-on (SSO), which means that users can log in once and have access to both sets of applications without the need to authenticate separately. Option A, while related to integration, is not directly tied to deploying in the same tenant

Common Data Services = Microsoft Dataverse, which stores secures and allows sharing of organization's apps flows and data. C. Single Sign On, is the answer here

I think A