Exam AZ-305 topic 4 question 46 discussion

HOTSPOT -
You are designing a software as a service (SaaS) application that will enable Azure Active Directory (Azure AD) users to create and publish online surveys. The
SaaS application will have a front-end web app and a back-end web API. The web app will rely on the web API to handle updates to customer surveys.
You need to design an authorization flow for the SaaS application. The solution must meet the following requirements:
✑ To access the back-end web API, the web app must authenticate by using OAuth 2 bearer tokens.
✑ The web app must authenticate by using the identities of individual users.
What should you include in the solution? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:

Suggested Answer:
Box 1: Azure AD -
The Azure AD server issues tokens (access & refresh token). See step 5 below in graphic.
OAuth 2.0 authentication with Azure Active Directory.
The OAuth 2.0 is the industry protocol for authorization. It allows a user to grant limited access to its protected resources. Designed to work specifically with
Hypertext Transfer Protocol (HTTP), OAuth separates the role of the client from the resource owner. The client requests access to the resources controlled by the resource owner and hosted by the resource server (here the Azure AD server). The resource server issues access tokens with the approval of the resource owner. The client uses the access tokens to access the protected resources hosted by the resource server.


Box 2: A web API -
Delegated access is used.
The bearer token sent to the web API contains the user identity.
The web API makes authorization decisions based on the user identity.
Reference:
https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/auth-oauth2 https://docs.microsoft.com/lb-lu/azure/architecture/multitenant-identity/web-api