Introduction to Exchange OnlineExchange Admin Center & PowerShell

Exchange Admin Center & PowerShell

20 mins

Understanding the Concept

The Exchange Admin Center (EAC) is the web-based management console for Exchange Online. It provides a graphical interface for managing recipients, mail flow, permissions, and organization settings.

Exchange Online PowerShell uses the ExchangeOnlineManagement module (V3) which connects via REST-based cmdlets. This provides faster and more reliable connections compared to the legacy remote PowerShell method.

For bulk operations and automation, PowerShell is essential. Common cmdlets include Get-Mailbox, Set-Mailbox, New-TransportRule, and Get-MessageTrace for troubleshooting.

Key Points

•EAC is accessed at admin.exchange.microsoft.com

•ExchangeOnlineManagement V3 module uses REST-based connections

•Connect-ExchangeOnline is the primary connection cmdlet

•PowerShell is required for bulk operations and automation

•Role-Based Access Control (RBAC) governs admin permissions

•Microsoft Graph API provides programmatic access to mailbox data

Why This Matters

Effective Exchange Online administration requires proficiency in both the EAC and PowerShell. Many advanced configurations and bulk operations can only be performed via PowerShell, making it an essential skill for messaging administrators.

Common Mistakes to Avoid

✗Using legacy remote PowerShell instead of the V3 REST-based module

✗Not properly disconnecting PowerShell sessions after management tasks

✗Granting excessive admin permissions without following least-privilege principle

Interview Discussion Points

💡Demonstrate familiarity with common Exchange Online PowerShell cmdlets

💡Explain RBAC roles and how to delegate admin responsibilities

💡Discuss scenarios where PowerShell is preferred over the EAC

MS-203 Exam Tips

📝Know how to connect to Exchange Online using Connect-ExchangeOnline

📝Understand the difference between EAC and PowerShell capabilities

📝Be familiar with RBAC role groups like Organization Management, Recipient Management

Exchange Online Architecture Overview

DNS Records for Exchange Online