Windows Server 2025 is the cloud-ready operating system that supports your current workloads while introducing new technologies that make it easy to transition to cloud computing when you are ready. It delivers powerful new layers of security along with Azure-inspired innovation for the applications and infrastructure that power your business. Windows Server 2025 Datacenter is for highly virtualized datacenter and cloud environments. Each purchase includes 2 core licenses. A minimum of 16 core licenses (eight 2-core packs) is required per server. If your server has more than 16 cores, you will need to buy additional licenses (see Windows Server licensing page for details.) You also need to purchase Windows Server Client Access Licenses (CALs) for every user or device accessing the server.

Windows Server 2025 Datacenter edition is replete with an array of sophisticated and avant-garde functionalities, meticulously engineered to cater to the exigent demands of contemporary IT infrastructures.

Here are some of its salient features:

Hyper-Converged Infrastructure (HCI):
- The Datacenter edition incorporates advanced HCI capabilities, enabling seamless integration of compute, storage, and networking resources. This facilitates enhanced scalability and operational efficiency.
Software-Defined Networking (SDN):
- SDN capabilities in this edition allow for dynamic network configuration and management, leveraging technologies such as Network Controller and Software Load Balancer. This ensures optimal network performance and security.
Storage Spaces Direct (S2D):
- S2D provides high-performance, resilient storage solutions by aggregating local storage devices into a single, highly available storage pool. This feature supports both NVMe and SSDs, ensuring rapid data access and processing.
Shielded Virtual Machines (VMs):
- This edition offers robust security for VMs through Shielded VMs, which utilize BitLocker encryption and Virtual Trusted Platform Module (vTPM) to protect against unauthorized access and tampering.
Storage Replica:
- Storage Replica facilitates synchronous and asynchronous replication of data across geographically dispersed locations, ensuring data integrity and disaster recovery capabilities.
Advanced Threat Protection:
- Integrated with Microsoft Defender for Identity and Microsoft Defender for Endpoint, this edition provides comprehensive threat detection and response capabilities, safeguarding against sophisticated cyber threats.
Hotpatching:
- Hotpatching allows for the application of security updates and patches without necessitating system reboots, thereby minimizing downtime and maintaining operational continuity.
Azure Hybrid Integration:
- The Datacenter edition seamlessly integrates with Azure services, enabling hybrid cloud scenarios. Features such as Azure Arc and Azure Site Recovery enhance flexibility and disaster recovery options.
Automatic Virtual Machine Activation (AVMA):
- AVMA simplifies the activation process for VMs, allowing them to automatically activate against the host's activation status, streamlining deployment and management.
Enhanced Management Tools:
- The edition includes advanced management tools such as Windows Admin Center and System Center, providing comprehensive monitoring, configuration, and automation capabilities.