Explanation:

Reference:
https://docs.microsoft.com/en-us/windows/deployment/update/waas-delivery-optimization
https://2pintsoftware.com/delivery-optimization-dl-mode/

Explanation:

Reference:
https://docs.microsoft.com/en-us/azure/active-directory/devices/concept-azure-ad-join
https://docs.microsoft.com/en-us/azure/active-directory/devices/concept-azure-ad-register

References:
https://docs.microsoft.com/en-us/windows/deployment/windows-autopilot/existing-devices
" This topic describes how to convert Windows 7 or Windows 8.1 domain-joined computers to Windows 10 devices joined to either Azure Active Directory or Active Directory (Hybrid Azure AD Join) by using Windows Autopilot "
Topic 3, Contoso Ltd, Case 2
Overview
Contoso, Ltd, is a consulting company that has a main office in Montreal and two branch offices in Seattle and New York.
Contoso has the users and computers shown in the following table.

The company has IT, human resources (HR), legal (LEG), marketing (MKG) and finance (FIN) departments.
Contoso uses Microsoft Store for Business and recently purchased a Microsoft 365 subscription.
The company is opening a new branch office in Phoenix. Most of the users in the Phoenix office will work from home.
Existing Environment
The network contains an Active Directory domain named contoso.com that is synced to Microsoft Azure Active Directory (Azure AD).
All member servers run Windows Server 2016. All laptops and desktop computers run Windows 10 Enterprise.
The computers are managed by using Microsoft System Center Configuration Manager. The mobile devices are managed by using Microsoft Intune.
The naming convention for the computers is the department acronym, followed by a hyphen, and then four numbers, for example, FIN-6785. All the computers are joined to the on-premises Active Directory domain.
Each department has an organization unit (OU) that contains a child OU named Computers. Each computer account is in the Computers OU of its respective department.
Intune Configuration

Requirements
Planned Changes
Contoso plans to implement the following changes:
Provide new computers to the Phoenix office users. The new computers have Windows 10 Pro preinstalled and were purchased already.
Start using a free Microsoft Store for Business app named App1.
Implement co-management for the computers.
Technical Requirements:
Contoso must meet the following technical requirements:
Ensure that the users in a group named Group4 can only access Microsoft Exchange Online from devices that are enrolled in Intune.
Deploy Windows 10 Enterprise to the computers of the Phoenix office users by using Windows Autopilot.
Monitor the computers in the LEG department by using Windows Analytics.
Create a provisioning package for new computers in the HR department.
Block iOS devices from sending diagnostic and usage telemetry data.
Use the principle of least privilege whenever possible.
Enable the users in the MKG department to use App1.
Pilot co-management for the IT department.

https://learn.microsoft.com/en-us/azure/azure-monitor/agents/azure-monitor-agent-windows-client#prerequisites