Microsoft 365 (previously known as Office 365) is a cloud-based productivity and collaboration platform provided by Microsoft. It combines productivity applications, cloud services, security features, and device management tools into a single subscription-based service.
Microsoft 365 enables users to work from anywhere using an internet connection while accessing emails, documents, meetings, storage, and collaboration tools.
Earlier, Office 365 primarily focused on providing Office applications and cloud services. Microsoft later expanded the platform by adding security, device management, and advanced collaboration capabilities, which led to the introduction of Microsoft 365.
Today, Microsoft 365 is one of the most widely used cloud productivity platforms by businesses, educational institutions, and government organizations.
Microsoft 365 includes several services and applications that help organizations improve productivity and collaboration.
These applications help users create and manage documents, spreadsheets, presentations, and notes.
Examples:
• Microsoft Word
• Microsoft Excel
• Microsoft PowerPoint
• Microsoft OneNote
• Microsoft Outlook
These services help employees communicate and work together efficiently.
Examples:
• Microsoft Teams
• Exchange Online
• Microsoft Forms
• Microsoft Planner
Microsoft 365 provides cloud-based storage solutions that allow users to access files from anywhere.
Examples:
• OneDrive for Business
• SharePoint Online
Microsoft 365 includes identity and security management features.
Examples:
• Microsoft Entra ID (Azure AD)
• Multi-Factor Authentication (MFA)
• Conditional Access
• Microsoft Defender
Organizations use Microsoft 365 because it offers several advantages.
Benefits include:
• Anywhere access to applications and data
• Cloud-based email services
• Centralized administration
• Improved collaboration
• Advanced security features
• Automatic updates
• Reduced infrastructure costs
• Business continuity support
Modern organizations require flexibility, remote access, and secure collaboration. Microsoft 365 provides these capabilities through cloud-based services.
Organizations use Microsoft 365 for:
• Email communication
• Team collaboration
• Document sharing
• Online meetings
• Identity management
• Data protection
Microsoft 365 helps organizations modernize their IT infrastructure by reducing dependency on on-premises systems.
It provides:
• Better productivity
• Secure access to resources
• Simplified administration
• Scalable cloud solutions
• Improved user experience
Example: A company uses Microsoft 365 to provide employees with Outlook email, Teams meetings, OneDrive storage, and SharePoint collaboration. Employees can securely access company resources from office locations, home, or while traveling.
══════════════════════════════════════════════════
---------------------------------------------------------------------
Period: Before 2010
Microsoft BPOS was Microsoft's first cloud-based business productivity platform.
It included basic online services such as the following:
• Exchange Server
• SharePoint Server
• Office Communications Services
• Hosted collaboration tools
Although BPOS provided cloud services, it had limited integration and management capabilities compared to modern Microsoft 365 services.
In 2010, Microsoft launched Office 365 as the successor to BPOS.
Office 365 combined Microsoft Office applications with cloud services and introduced a subscription-based model.
Major services included:
• Exchange Online
• SharePoint Online
• Lync Online (later Skype for Business)
• Office Applications
Benefits introduced:
• Cloud-hosted email
• Online collaboration
• Reduced on-premises infrastructure
• Subscription-based licensing
This was the beginning of Microsoft's modern cloud productivity platform.
Between 2013 and 2020, Office 365 received major enhancements and became one of the most widely used business productivity platforms.
Several Microsoft cloud services were integrated into the platform, including:
• Azure
• OneDrive for Business
• Power BI
• Yammer
• Skype for Business
Organizations benefited from:
• Better collaboration
• Cloud storage
• Business analytics
• Improved accessibility
• Mobile device support
During this period, Microsoft significantly expanded its cloud ecosystem beyond traditional Office applications.
In 2020, Microsoft officially expanded Office 365 into Microsoft 365.
Microsoft 365 is not just a productivity suite; it is a complete cloud platform that combines the following:
• Productivity applications
• Collaboration tools
• Security solutions
• Identity management
• Device management
New services and capabilities include:
• Microsoft Teams
• Microsoft Entra ID (Azure AD)
• Microsoft Intune
• Microsoft Defender
• Windows 10 / Windows 11 integration
• Enterprise Mobility + Security (EMS)
---------------------------------------------------------------------
Microsoft 365 introduced several advanced capabilities that were not available in the earlier Office 365 platform.
Administrators can manage:
• Laptops
• Mobile devices
• Tablets
• Corporate endpoints
through Microsoft Intune and Endpoint Manager.
Microsoft 365 includes:
• Multi-Factor Authentication (MFA)
• Conditional Access
• Microsoft Defender
• Identity Protection
• Data Loss Prevention (DLP)
These features help organizations protect users and data.
Microsoft continuously adds cloud services such as:
• Microsoft Teams
• Power Platform
• AI-powered services
• Microsoft Copilot
• Advanced collaboration tools
These innovations improve productivity and business efficiency.
---------------------------------------------------------------------
The name change reflects Microsoft's broader vision.
Office 365 mainly focuses on the following:
• Office applications
• Email services
• Cloud collaboration
Microsoft 365 now includes the following:
• Office applications
• Windows operating system integration
• Security services
• Device management
• Identity management
• Enterprise mobility solutions
Therefore, Microsoft 365 provides a complete workplace solution instead of only Office applications.
---------------------------------------------------------------------
| Period | Product Name | Key Features |
| Before 2010 | Microsoft BPOS | Exchange, SharePoint, basic cloud services |
| 2010 – 2013 | Office 365 | Cloud email, Office apps, collaboration |
| 2013 – 2020 | Office 365 Expansion | Azure, OneDrive, Power BI, Skype |
| 2020 – Present | Microsoft 365 | Teams, Security, Intune, Entra ID, EMS |
Example: A company initially used Office 365 only for Outlook email and Office applications. After migrating to Microsoft 365, the organization now uses Teams for communication, Intune for device management, Entra ID for identity management, and Microsoft Defender for security protection, all within a single cloud platform.
Microsoft offers different licensing plans to meet the requirements of organizations of various sizes. Not every employee in a company requires the same tools and security features. For example, a customer support executive may only need email and Microsoft Teams, while an IT administrator may require advanced security, device management, and compliance features.
To address these different needs, Microsoft provides multiple enterprise licensing options under two categories:
Office 365 Enterprise Licensing
Microsoft 365 Enterprise Licensing
Before understanding each license, it is important to know the difference between Office 365 and Microsoft 365.
Office 365 mainly provides productivity and collaboration services such as Outlook, Teams, SharePoint, OneDrive, and Office applications. Microsoft 365 includes everything in Office 365 and adds Windows Enterprise, Microsoft Intune, Microsoft Entra ID Premium, and advanced security and device management capabilities.
---------------------------------------------------------------------
---------------------------------------------------------------------
Office 365 E1 is the basic enterprise plan designed for users who primarily work through web browsers and do not require desktop Office applications.
With Office 365 E1, users can access Outlook email, Microsoft Teams, SharePoint Online, OneDrive for Business, and web-based versions of Word, Excel, and PowerPoint.
Since E1 does not include desktop Office applications, users must work using browser-based Office apps.
Suitable For
Office 365 E1 is suitable for
Example : Consider a customer support executive who spends most of the day responding to emails and attending Teams meetings. Since this employee does not create complex Excel reports or PowerPoint presentations, Office 365 E1 is sufficient.
Advantages
Limitations
---------------------------------------------------------------------
Office 365 E3 is one of the most commonly used enterprise licenses.
It includes everything available in E1 along with full desktop versions of Microsoft Office applications such as Word, Excel, PowerPoint, Outlook, and Access.
This license is designed for employees who regularly work with Office documents and require advanced productivity tools.
Suitable For
Office 365 E3 is suitable for:
Example : A finance executive creates detailed Excel reports and financial models daily. Since browser-based Office apps are not sufficient for advanced Excel functions, Office 365 E3 is a better choice.
Advantages :
Limitations :
---------------------------------------------------------------------
Office 365 E5 is the most advanced Office 365 enterprise license.
It includes all features available in E3 and adds advanced security, compliance, analytics, and threat protection capabilities.
Organizations handling sensitive information often choose E5 because it provides enhanced protection against cyber threats.
Suitable For
Office 365 E5 is suitable for:
Example : A bank handles confidential customer data and must comply with strict security regulations. Office 365 E5 helps protect emails, detect threats, and maintain compliance requirements.
Advantages :
Limitations :
---------------------------------------------------------------------
Microsoft 365 Enterprise licenses combine Office 365 services with Windows Enterprise, Microsoft Intune, and Microsoft Entra ID.
These licenses are intended for organizations that want centralized management of users, devices, applications, and security.
Microsoft 365 E3 includes all Office 365 E3 features plus:
This license is ideal for organizations adopting a modern workplace environment.
Suitable For
Microsoft 365 E3 is suitable for:
Example : A company provides laptops to all employees and wants to manage updates, security policies, and applications centrally. Microsoft 365 E3 allows administrators to manage these devices using Intune.
Advantages :
---------------------------------------------------------------------
Microsoft 365 E5 is Microsoft's premium enterprise license.
It includes everything in Microsoft 365 E3 and adds advanced cybersecurity and identity protection capabilities.
Organizations with strict security requirements often choose Microsoft 365 E5.
Additional Features
Suitable For
Microsoft 365 E5 is suitable for:
Example : A multinational company wants to detect suspicious login activities, monitor threats, and protect privileged administrator accounts. Microsoft 365 E5 provides these capabilities.
Advantages :
---------------------------------------------------------------------
Microsoft 365 E7 is Microsoft's latest AI-focused enterprise offering.
This license is designed for organizations that want to integrate Artificial Intelligence into daily business operations.
Microsoft 365 E7 includes all Microsoft 365 E5 capabilities and adds AI-powered productivity features.
Additional Features :
Suitable For :
Microsoft 365 E7 is suitable for:
Example : A consulting company wants employees to generate reports, presentations, and summaries using AI. Microsoft 365 E7 provides integrated AI tools through Microsoft Copilot.
---------------------------------------------------------------------
| Feature | Office 365 E1 | Office 365 E3 | Office 365 E5 |
| Web Office Apps | Yes | Yes | Yes |
| Desktop Office Apps | No | Yes | Yes |
| Exchange Online | Yes | Yes | Yes |
| Microsoft Teams | Yes | Yes | Yes |
| OneDrive | Yes | Yes | Yes |
| SharePoint Online | Yes | Yes | Yes |
| Basic Security | Yes | Yes | Yes |
| Advanced Security | No | Limited | Yes |
| Advanced Compliance | No | Basic | Yes |
| Best For | Frontline Users | Office Workers | Security-Focused Organizations |
| Feature | M365 E3 | M365 E5 | M365 E7 |
| Office 365 Services | Yes | Yes | Yes |
| Windows Enterprise | Yes | Yes | Yes |
| Microsoft Intune | Yes | Yes | Yes |
| Entra ID Premium P1 | Yes | Yes | Yes |
| Entra ID Premium P2 | No | Yes | Yes |
| Microsoft Defender | Basic | Advanced | Advanced |
| Advanced Compliance | Basic | Advanced | Advanced |
| AI Features | No | Limited | Yes |
| Microsoft Copilot | Add-on | Add-on | Included |
| Best For | Hybrid Organizations | Security-Critical Organizations | AI-Driven Enterprises |
| User Type | Recommended License |
| Call Center Executive | Office 365 E1 |
| Sales Executive | Office 365 E1 |
| HR Executive | Office 365 E3 |
| Finance Analyst | Office 365 E3 |
| Team Manager | Office 365 E3 |
| IT Support Engineer | Microsoft 365 E3 |
| System Administrator | Microsoft 365 E5 |
| Security Administrator | Microsoft 365 E5 |
| SOC Analyst | Microsoft 365 E5 |
| AI-Powered Enterprise User | Microsoft 365 E7 |
---------------------------------------------------------------------
The Microsoft 365 Admin Center is a web-based management portal that allows administrators to manage and monitor Microsoft 365 services, users, licenses, subscriptions, security settings, and organizational resources from a centralized location.
It serves as the primary administration interface for Microsoft 365 environments. Through this portal, administrators can perform day-to-day management tasks without needing direct access to individual Microsoft 365 services.
The Microsoft 365 Admin Center can be accessed through https://admin.microsoft.com.
After signing in with an administrator account, administrators can manage all Microsoft 365 services from a single dashboard.
---------------------------------------------------------------------
In an organization with hundreds or thousands of users, manually managing accounts, licenses, passwords, and services would be extremely difficult.
The Microsoft 365 Admin Center simplifies administration by providing a centralized platform where administrators can:
This centralized approach reduces administrative effort and improves operational efficiency.
---------------------------------------------------------------------
One of the primary functions of the Admin Center is user management.
Administrators can:
Example : When a new employee joins the company, the administrator creates a Microsoft 365 account, assigns a license, and provides login credentials through the Admin Center.
Microsoft 365 services require licenses before users can access them.
Administrators can:
Example : A company purchases 100 Microsoft 365 E3 licenses. The administrator assigns these licenses to employees through the Admin Center.
Organizations often use their own company domain instead of Microsoft's default domain.
Administrators can:
Example :
Instead of using: user@company.onmicrosoft.com
an organization can use: user@company.com
after adding and verifying its custom domain.
The Admin Center provides real-time information about Microsoft 365 services.
Administrators can monitor:
Example : If Microsoft Teams experiences a service outage, administrators can view alerts and updates in the Service Health Dashboard.
Administrators can manage user passwords directly from the portal.
Tasks include:
Example : If an employee forgets their password, the Helpdesk Administrator can reset it through the Admin Center.
The Admin Center allows organizations to manage Microsoft subscriptions.
Administrators can:
Example : A company upgrading from Office 365 E1 to Microsoft 365 E3 can manage the subscription change through the Admin Center.
Administrators can generate reports related to Microsoft 365 usage.
Reports include:
These reports help organizations understand how Microsoft 365 services are being utilized.
---------------------------------------------------------------------
Consider an organization with 500 employees using Microsoft 365.
Using the Microsoft 365 Admin Center, administrators can:
Without the Admin Center, these tasks would require separate management tools, increasing complexity and administrative effort.
---------------------------------------------------------------------
Introduction to Administrative Roles
Microsoft 365 is used by organizations of all sizes, from small businesses to large enterprises with thousands of users. Managing all Microsoft 365 services through a single administrator account is neither practical nor secure.
To follow the principle of least privilege, Microsoft provides Role-Based Access Control (RBAC), which allows administrators to assign specific permissions based on job responsibilities. Instead of giving every administrator full control over the environment, organizations can assign specialized roles for managing users, email, Teams, SharePoint, passwords, and other services.
Each administrative role has a defined set of permissions that determines what tasks the administrator can perform.
---------------------------------------------------------------------
What is a global administrator?
The Global Administrator is the highest privileged administrative role in Microsoft 365. Users assigned this role have complete control over the Microsoft 365 tenant and can manage nearly all services and settings.
This role is equivalent to an Enterprise Administrator in an on-premises Active Directory environment.
Responsibilities
A Global Administrator can:
Suitable For
This role is usually assigned to:
Example : In a company, the IT Head is responsible for managing the entire Microsoft 365 environment. Therefore, the IT Head is assigned the Global Administrator role.
---------------------------------------------------------------------
What is an Exchange Administrator?
The Exchange Administrator manages Exchange Online, which is Microsoft's cloud-based email service.
This role focuses specifically on email-related administration.
Responsibilities :-
An Exchange Administrator can:
Suitable For
This role is suitable for:
Example : If users are unable to send or receive emails, the Exchange Administrator investigates and resolves the issue.
---------------------------------------------------------------------
What is a Helpdesk Administrator?
The Helpdesk Administrator role is designed for first-level support personnel who assist users with common account-related issues.
This role provides limited administrative permissions focused on user support.
Responsibilities
A Helpdesk Administrator can:
Suitable For
This role is suitable for:
Example : When an employee forgets their Microsoft 365 password, the Helpdesk Administrator can reset the password without requiring Global Administrator privileges.
---------------------------------------------------------------------
What is a Global Reader?
The Global Reader role provides read-only access across Microsoft 365 services.
Users assigned this role can view settings and configurations but cannot make any changes.
Responsibilities
A Global Reader can:
Suitable For
This role is suitable for:
Example : An internal auditor reviewing Microsoft 365 security settings can use the Global Reader role to inspect configurations without the risk of accidentally modifying them.
---------------------------------------------------------------------
What is a Teams Administrator?
The Teams Administrator manages Microsoft Teams and collaboration services.
This role focuses on configuring Teams settings and communication policies.
Responsibilities
A Teams Administrator can:
Suitable For
This role is suitable for:
Example : If an organization wants to restrict meeting recording permissions, the Teams Administrator can configure the required Teams policy.
---------------------------------------------------------------------
What is a SharePoint Administrator?
The SharePoint Administrator manages SharePoint Online and OneDrive for Business services.
This role focuses on document management and collaboration platforms.
Responsibilities
A SharePoint Administrator can:
Suitable For
This role is suitable for:
Example : If a department requires a new SharePoint site for project documentation, the SharePoint Administrator can create and manage the site.
---------------------------------------------------------------------
What is a user administrator?
The User Administrator role focuses on managing user accounts and licenses.
Unlike the Global Administrator, this role has limited permissions and cannot manage all tenant settings.
Responsibilities
A User Administrator can:
Suitable For
This role is suitable for:
Example : When a new employee joins the company, the User Administrator creates the account and assigns the appropriate Microsoft 365 license.
---------------------------------------------------------------------
What is a password administrator?
The Password Administrator role is specifically responsible for managing user passwords.
This role provides fewer permissions than a User Administrator and is commonly assigned to support teams.
Responsibilities
A Password Administrator can:
Suitable For
This role is suitable for:
Example : If a user forgets their password while working remotely, the Password Administrator can reset the password and help restore access.
---------------------------------------------------------------------
Organizations often separate administrative responsibilities to improve security and reduce risk.
Benefits include:
For example, a Helpdesk Engineer should not have the same permissions as a Global Administrator because their job responsibilities are different.
---------------------------------------------------------------------
| Role | Primary Responsibility |
| Global Administrator | Complete Microsoft 365 management |
| Exchange Administrator | Email and Exchange Online management |
| Helpdesk Administrator | User support and password assistance |
| Global Reader | Read-only access and auditing |
| Teams Administrator | Microsoft Teams administration |
| SharePoint Administrator | SharePoint and OneDrive management |
| User Administrator | User and license management |
| Password Administrator | Password management and account recovery |
In a large organization:
---------------------------------------------------------------------
When a Microsoft 365 tenant is created, Microsoft automatically assigns a default domain name in the format: companyname.onmicrosoft.com
For example:
Although this default domain is fully functional, most organizations prefer to use their own business domain for professional communication and branding.
A Custom Domain is a domain name owned by an organization and added to Microsoft 365 so that users can use business email addresses instead of the default Microsoft domain.
For example:
Instead of: john@company.onmicrosoft.com
Organizations prefer: john@company.com
This makes email communication more professional and helps establish trust with customers and business partners.
---------------------------------------------------------------------
A domain is a unique name that identifies an organization on the internet.
Examples:
Organizations purchase domains from domain registrars such as:
Once purchased, the domain can be integrated with Microsoft 365.
---------------------------------------------------------------------
A custom domain helps organizations create a professional identity and improve brand recognition.
• Professional email addresses
• Improved company branding
• Better customer trust
• Easier identification of company users
• Consistent business communication
• Enhanced credibility
---------------------------------------------------------------------
Created automatically during tenant creation.
Example: admin@company.onmicrosoft.com
Characteristics:
• Provided by Microsoft
• Free to use
• Cannot be removed completely
• Used for internal Microsoft 365 operations
Added and verified by the organization.
Example: admin@company.com
Characteristics:
• Owned by the organization
• Used for business communication
• Improves branding
• Can be assigned to users and services
---------------------------------------------------------------------
Once added to Microsoft 365, custom domains can be used for:
User Accounts
Example: user@company.com
Email Addresses
Example: support@company.com
Microsoft Teams
Users sign in with: user@company.com
SharePoint Online
Organizations can customize SharePoint URLs using their domain identity.
Microsoft 365 Services
The same domain can be used across:
• Exchange Online
• Teams
• SharePoint Online
• OneDrive
• Microsoft Entra ID
---------------------------------------------------------------------
Without a custom domain, organizations would need to use the default onmicrosoft.com domain, which appears less professional.
Custom domains help organizations:
• Establish a professional image
• Strengthen brand identity
• Improve communication
• Standardize user accounts
• Enhance customer confidence
A company named ABC Technologies creates a Microsoft 365 tenant and receives the default domain: abctechoffice.onmicrosoft.com
User accounts would look like: employee@abctechoffice.onmicrosoft.com
To make communication more professional, the company purchases: abctech.com
After adding the custom domain to Microsoft 365, users receive email addresses such as: employee@abctech.com
This creates a more professional business identity.
---------------------------------------------------------------------
Introduction
When a custom domain is added to Microsoft 365, Microsoft must be able to verify domain ownership and direct various services such as email, Teams, SharePoint, and user authentication to the correct destination. This is achieved through DNS (Domain Name System) records.
DNS acts like the internet's phonebook. Instead of remembering IP addresses, users access services using domain names, and DNS translates those names into the appropriate destinations.
In Microsoft 365, DNS records play a critical role in connecting a custom domain to Microsoft services. Without proper DNS configuration, users may experience issues such as email delivery failures, authentication problems, or inability to access Microsoft 365 services.
For example, when an organization adds the domain company.com to Microsoft 365, several DNS records must be configured so that Microsoft knows how to handle email, domain verification, and service connectivity.
---------------------------------------------------------------------
DNS records help Microsoft 365 perform various functions, including:
Without proper DNS records, Microsoft 365 services cannot function correctly with a custom domain.
---------------------------------------------------------------------
1. Domain Verification
Before Microsoft allows a custom domain to be used, it must verify ownership of the domain.
This verification is typically performed using a TXT record.
DNS records tell the internet where emails should be delivered.
Exchange Online uses MX records to receive incoming emails.
Applications such as Outlook and Teams use DNS records to automatically locate Microsoft 365 services.
Certain DNS records help verify email legitimacy and improve security.
Microsoft Teams, SharePoint, and other services rely on DNS records for proper communication and connectivity.
Suppose a company purchases the domain: company.com
and wants to use Microsoft 365.
To enable email and Microsoft 365 services, the administrator must add several DNS records provided by Microsoft. These records allow Microsoft to verify ownership of the domain and ensure that services such as Exchange Online and Teams function correctly.
---------------------------------------------------------------------
Microsoft 365 commonly uses several DNS record types. Among them, TXT, MX, and CNAME records are the most important and are frequently configured during Microsoft 365 deployment.
What is a TXT record?
A TXT (text) Record stores text-based information in DNS.
In Microsoft 365, TXT records are primarily used for domain ownership verification.
When a custom domain is added, Microsoft generates a unique TXT record that must be added to the DNS zone of the domain.
Microsoft checks this record to confirm that the organization owns the domain.
Example :
Type: TXT
Value: MS=ms39500721
Microsoft reads this value and verifies ownership of the domain.
Importance in Microsoft 365
Without the TXT record, Microsoft cannot verify the custom domain, and the domain cannot be used with Microsoft 365 services.
---------------------------------------------------------------------
What is an MX Record?
An MX (Mail Exchange) Record specifies the mail server responsible for receiving emails for a domain.
In Microsoft 365, the MX record directs incoming email traffic to Exchange Online.
Whenever someone sends an email to admin@evision.com, the sender's mail server performs an nslookup for evision.com to find the MX record. The MX record then points the email to Microsoft's mail servers (Exchange Online), which deliver the message to the recipient's mailbox.
Uses of MX Records
Example :
Type: MX
Domain: evision.com
Value: johncloud-site.mail.protection.outlook.com
This record tells the internet that Microsoft Exchange Online is responsible for receiving emails for the evision.com domain.
Without a correctly configured MX record:
---------------------------------------------------------------------
What is a CNAME Record?
A CNAME (Canonical Name) Record creates an alias that points one domain name to another domain name.
Instead of pointing directly to an IP address, a CNAME record redirects DNS requests to another hostname.
When a user accesses www.evision.com, DNS checks the CNAME record and redirects the request to the actual target hostname evisioncom.azurewebsites.net.
Example :-
Type: CNAME
Host/Name: www
Domain: evision.com
Value: evisioncom.azurewebsites.net
This record tells DNS that www.evision.com is an alias for evisioncom.azurewebsites.net.
CNAME records help:
---------------------------------------------------------------------
| Record Type | Purpose | Microsoft 365 Usage |
| TXT Record | Stores text information | Domain verification and validation |
| MX Record | Routes email traffic | Directs emails to Exchange Online |
| CNAME Record | Creates aliases for services | AutoDiscover and service connectivity |
When an organization adds a custom domain to Microsoft 365:
Together, these records ensure that the custom domain functions properly with Microsoft 365 services.
A company purchases the domain: company.com
The administrator adds the domain to Microsoft 365 and configures:
After the DNS records are configured and propagated, employees can:
This is why DNS configuration is one of the most important steps when integrating a custom domain with Microsoft 365.
