MS-203 Exam Dumps

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Certification Provider:	Microsoft
Exam Code / Number:	MS-203
Exam Name:	Microsoft 365 Messaging
Exam Questions:	396
Last Updated:	Oct 06, 2026
Corresponding Certification:	Microsoft 365 Certified

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Domain 3. Plan and Implement Hybrid Configuration and Migration (20-25%)

Planning and implementation of a hybrid environment

Use the Hybrid Configuration Wizard (HCW) for the planning and configuration of the environment
Decisions to choose between Exchange Classic Hybrid and Exchange Modern Hybrid
Configuration of Organization Configuration Transfer (OCT)
Edge server role management
Locate the Exchange Hybrid Agent
Configuration and analysis of hybrid free or busy access

Microsoft MS-203 exam is a challenging certification that requires extensive knowledge and experience in managing messaging systems. Candidates who are planning to take the exam should have a strong understanding of Microsoft 365 messaging infrastructure, as well as, hands-on experience in configuring and managing messaging systems. Microsoft recommends that candidates have at least two years of experience in managing messaging systems in a Microsoft 365 environment.

Microsoft MS-203 Exam Syllabus Topics:

Topic	Details
Topic 1	Plan and implement a hybrid environment Manage email address policies Configure and manage Outlook mobile
Topic 2	Decide between Exchange Classic Hybrid and Exchange Modern Hybrid Configure mobile authentication methods
Topic 3	Configure migration endpoints in Microsoft 365, including tenant-to-tenant Configure global Outlook on the Webpolicies
Topic 4	Troubleshoot client access connectivity problems Manage mailbox migration request batches
Topic 5	Evaluate migration methods, including cutover, staged, PST Imports, IMAP, G-Suite Plan and manage client access
Topic 6	Configure connectors between tenants Evaluate and configure hybrid free busy access Create and configure connectors
Topic 7	configure Organization Configuration Transfer (OCT) Plan and manage organizational settings Configure organizational sharing
Topic 8	Plan and configure the environment by using the Hybrid Configuration Wizard (HCW) Manage Exchange certificates lifecycle
Topic 9	Configure and manage Active Sync deploy the Exchange Hybrid Agent Troubleshoot mailbox migration
Topic 10	Configure mobile device mailbox policies Manage Offline Address Book (OAB) Manage Global Address List (GAL)

Reference: https://docs.microsoft.com/en-us/learn/certifications/exams/ms-203