Exchange Server & Subscription Edition

Microsoft Exchange Server is the industry-standard messaging platform for on-premises and hybrid environments. The new **Exchange Server Subscription Edition (SE)** represents the next step in the evolution of the platform, offering a more streamlined, subscription-based model for continuous updates and security.

Core Features & Services

📬 Modern Messaging

High-performance mailboxes with advanced calendaring, contact management, and Outlook on the Web (OWA) for a seamless user experience.

🛡️ Security & Compliance

Integrated Data Loss Prevention (DLP) and Retention Policies. Specialized in upgrading from **Exchange 2019 CU13 to CU15** and then to the SE.

☁️ Hybrid Configuration

Using the Hybrid Configuration Wizard (HCW) to bridge on-premises servers with Exchange Online for cross-premises mail flow and free/busy sharing.

Deployment Strategies

Strategy	Configuration	Target Scenario
Single Mailbox	All roles on one server	Small business or test environments with low availability requirements.
Multiple Mailbox (DAG)	HA via Database Availability Group	Enterprise environments requiring zero downtime and automatic failover
Hybrid Identity	On-prem + M365 (Entra ID)	Staged or phased migrations of mailboxes to the cloud (Exchange Online)

Licensing & Migration Plan

Moving to Exchange SE requires a valid subscription. As an Assistant Technical Manager at **Thakral One**, I manage end-to-end migration roadmaps [cite: 2026-01-23]:

Standard Edition

Designed for the needs of small to midsize organizations. Supports 1 to 5 mailbox databases.

Enterprise Edition

Scalable solution for large organizations, supporting up to 100 mailbox databases per server.

Client Access (CALs)

Required for every user or device accessing the server. Available in Standard and Enterprise (Add-on) versions.