Explanation
A picture containing diagram Description automatically generated

Box 1: top
Number of items to return in a result
Box 2: skip
$skip Indexes into a result set. Also used by some APIs to implement paging and can be used together with
$top to manually page results.
Reference: https://developer.microsoft.com/en-us/graph/docs/overview/query_parameters

Explanation
Centralized deployment of add-ins requires that the users are using Office 365 ProPlus (and are signed into Office using their Organizational ID), and have Exchange Online and active Exchange Online mailboxes.
Reference: https://docs.microsoft.com/en-us/office365/admin/manage/centralized-deployment-of-add-ins
Topic 3, E-invoicing
Case Study
Overview
This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.
To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other questions in this case study.
At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next section of the exam. After you begin a new section, you cannot return to this section.
To start the case study
To display the first question in this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the question. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. If the case study has an All Information tab, n...... that the information displayed is identical to the information displayed on the subsequent tabs. When you are ready to answer a question, click the Question button to ret........ to the question.
Existing Environment
Application Architecture
E-invoicing consists of a single-page application (SPA) and a backend web service that provides invoice management and processing functionality.
E-invoicing stores all the details of each invoicing operation in a backend cloud database. E-invoicing generates invoices in PDF format and provides users with the ability to download the PDF from OneDrive after it is generated. Each invoice has a unique identifier named invoiceid.
The users have a common workflow where they sign in to E-invoicing, and then open E-invoicing in multiple tabs of a web browser so they can use different parts of the application simultaneously.
Security Architecture
A . Datum uses the principle of least privilege whenever possible. A . Datum always uses the latest libraries and integration endpoints.
Requirements
Business Goals
A . Datum wants to integrate E-invoicing. Microsoft identity platform, and Microsoft Graph so that their customers can leverage Microsoft 365 services directly from within E-invoicing.
Planned Changes
A . Datum plans to add the following capabilities to E-invoicing:
* Email the generated invoices to customers on behalf of the current signed-in user. Any emails generated by the system will contain the invoiceid.
* Perform as many operations as possible in the browser without having to leave the E-invoicing application.
* Use Microsoft identity platform to manage identities, authentication, and authorization.
* Display all emails that contain a specific invoiceid.
Technical Requirements
A . Datum identifies the following technical requirements for the planned E-invoicing capabilities:
* Ensure that all operations performed by E-invoicing against Microsoft 365 are initiated by a user. Require that the user authorize E-invoicing to access the Microsoft 365 data the first time the application attempts to access Microsoft 365 data on the user's behalf.
* Send scheduled reminders to customers before a payment due date. Create an administration user interface to enable the scheduled reminders.
* Implement Microsoft Graph change notifications to detect emails from vendors that arrive in a designated mailbox.
* Implement single sign-on (SSO) and minimize login prompts across browser tabs.
* Secure access to the backend web service by using Microsoft identity platform.
* Ensure that all solutions use secure coding practices.
Backend Security Planned Changes
A . Datum wants to use custom application roles to map user functionality to permissions granted to users.
E-invoicing will have internal logic that will dynamically identify whether the user should be allowed to call the backend API.
SSO JavaScript Script
You plan to implement SSO with Microsoft Authentication Library (MSAL) by using the following code.

Access Token JavaScript Script
You have the following JavaScript code to obtain an access token.

Change Notification JSON
You have the following JSON message that will be sent by the Microsoft Graph service to detect the vendor emails.

Reference:
https://docs.microsoft.com/en-us/sharepoint/dev/spfx/web-parts/guidance/integrate-web-part-properties-with-sharepoint

Explanation
Webhooks are a great way for Teams to integrate with external apps. A webhook is essentially a POST request sent to a callback URL. In Teams, outgoing webhooks provide a simple way to allow users to send messages to your web service without having to go through the full process of creating bots via the Microsoft Bot Framework. Outgoing webhooks post data from Teams to any chosen service capable of accepting a JSON payload. Once an outgoing webhook is added to a team, it acts like bot, listening in channels for messages using @mention, sending notifications to external web services, and responding with rich messages that can include cards and images.
Reference:
https://docs.microsoft.com/en-us/microsoftteams/platform/webhooks-and-connectors/how-to/add-outgoing-webh

Scenario: Implement single sign-on (SSO) and minimize login prompts across browser tabs.
When your application is open in multiple tabs and you first sign in the user on one tab, the user is also signed in on the other tabs without being prompted. MSAL.js caches the ID token for the user in the browser localStorage and will sign the user in to the application on the other open tabs.
By default, MSAL.js uses sessionStorage which does not allow the session to be shared between tabs. To get SSO between tabs, make sure to set the cacheLocation in MSAL.js to localStorage.
Reference: https://docs.microsoft.com/bs-latn-ba/Azure/active-directory/develop/msal-js-sso Implement Microsoft Identity Question Set 2