Microsoft 365 Messaging — Lesson 1: Messaging Architecture and Exchange Online

Topics Covered

• messaging services
• Exchange Online architecture
• recipients and mail flow
• administrative tools

Practical Activity

• Document the scenario, assumptions, stakeholders, and expected business or technical outcome.
• Complete a guided configuration, analysis, or design exercise aligned to the lesson topics.
• Record validation evidence, risks, dependencies, and corrective actions.
• Summarize the result in a reusable implementation or operating note.

Validation Checklist

• Requirements and assumptions are clearly documented.
• The selected Microsoft features or services match the scenario.
• Security, governance, and operational impacts are considered.
• The final result includes evidence and actionable next steps.

Lesson Outcome

Learners can explain and apply messaging architecture and exchange online within a realistic Microsoft 365 messaging administration scenario.