This blog post series highlights the key announcements and major updates related to Azure Infrastructure as a Service (IaaS) and Azure Local, as officially released by Microsoft in the past two weeks.
Azure
Compute
Retirement of D, Ds, Dv2, Dsv2, and Ls Series Virtual Machines
Microsoft has announced the retirement of the D, Ds, Dv2, Dsv2, and Ls series virtual machines, effective May 1, 2028. After this date, these VM series will no longer be available for use or purchase. Customers currently utilizing these VM types are advised to begin planning their migration strategies toward newer VM generations to ensure ongoing compatibility and support for their applications. As part of the phased retirement process, three-year reserved instances for these VMs will no longer be available for purchase or renewal starting May 1, 2025. One-year reservations will continue to be offered until 2027. For those with active three-year reservation contracts, the benefits will remain valid until contract expiration. Beyond that point, instances will revert to pay-as-you-go pricing. To avoid billing surprises and ensure continuity, customers should review their reservations and take action to transition affected workloads.
Networking
Azure Firewall Updates – Parallel IP Group Updates
Azure Firewall now supports Parallel IP Group Updates, enabling administrators to update multiple IP Groups simultaneously as part of their firewall or firewall policy changes.
Key Benefits
- Faster & Scalable Updates: Update up to 20 IP Groups in parallel, achieving up to 2x faster update times compared to sequential updates.
- Improved Visibility: Enhanced error messaging allows administrators to quickly identify and resolve issues. Even if one IP Group fails, other updates continue uninterrupted, preserving overall system integrity.
This update significantly improves management efficiency and scalability for large-scale or dynamic firewall policy environments.
New Regions for Azure Front Door Premium with Private Link-Enabled Origins
Azure Front Door Premium now supports Private Link-enabled origins in West US 2 and Southeast Asia regions. This feature allows content to be delivered through public Front Door endpoints while keeping backend origins inaccessible from the public internet, enhancing security and privacy. With the addition of these new regions, organizations can now deploy Private Link-enabled architectures in more geographies, improving network performance and meeting regional compliance requirements.
Network isolated cluster in AKS
Azure Kubernetes Service (AKS) now offers network isolated clusters, enabling a simplified approach to securing network access to Kubernetes workloads. While customers have traditionally relied on Azure Firewall to control egress traffic and enforce isolation, this approach often introduces added complexity and cost. With network isolated clusters, organizations can reduce the risk of unintentional exposure of public endpoints and strengthen the security posture of their AKS deployments. This built-in feature helps minimize attack surfaces by ensuring tighter control over how clusters connect to external networks, supporting compliance and data protection goals with greater ease.
ExpressRoute Resiliency Enhancements (preview)
Microsoft has introduced new resiliency validation and insight capabilities for ExpressRoute, now available in public preview. These enhancements aim to improve the assessment and monitoring of ExpressRoute-enabled workloads, offering more robust and transparent insights into network reliability. The resiliency validation feature allows customers to simulate site failovers on their Virtual Network Gateways, enabling proactive testing during planned migrations or outage scenarios. This helps verify failover mechanisms and ensures continued connectivity to Azure services. In addition, the new resiliency insights capability introduces a resiliency index — a percentage-based score that evaluates ExpressRoute reliability based on criteria such as route resilience, use of zone-redundant gateways, advisory feedback, and test results from resiliency validation. These metrics allow organizations to identify weak points in their network architecture and make informed improvements to enhance the robustness of their connectivity.
Increased VNet limits for Private Endpoints (preview)
Microsoft has introduced High Scale Private Endpoints, now in public preview, enabling significantly increased limits for deploying Azure Private Endpoints within Virtual Networks (VNets) and across peered VNets. Previously, customers could only create up to 1,000 private endpoints within a single VNet, and exceeding this limit required a support request. Additionally, Microsoft recommended a soft limit of 4,000 private endpoints across peered VNets to avoid connectivity issues. With the introduction of High Scale Private Endpoints, these limits are substantially raised—allowing up to 5,000 private endpoints within a single VNet and 20,000 across peered VNets. This capability is especially beneficial for large-scale, service-rich environments where extensive use of private connectivity is essential. Customers seeking greater scalability for their private networking configurations are encouraged to adopt High Scale Private Endpoints to support growing infrastructure needs without the complexity of manual quota increases.
Storage
Vaulted Backup for Azure Files
Azure Backup has announced the general availability of Vaulted Backup support for Azure Files – Standard tier, providing a robust, enterprise-grade solution to protect data and applications hosted on Azure SMB file shares.
Key Features & Benefits
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Integrated Protection Policy: Combine snapshot and vaulted backup in a single policy to protect data in a secure Recovery Services vault.
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Regional Recovery: Ensure data resilience with support for cross-region restore.
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Advanced Protection Capabilities:
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Ransomware protection and immutability
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Restore capability even if the file share is deleted
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Azure File Sync Integration: Seamlessly protect cloud-tiered data from Azure File Sync, enabling long-term retention in a cost-effective way.
With this release, customers can meet compliance, security, and business continuity requirements while simplifying backup management and reducing data protection costs.
Azure File Sync support for managed identities
Azure File Sync now supports managed identities, a feature that has reached general availability. This enhancement replaces the need for shared keys with a more secure and streamlined authentication mechanism through system-assigned managed identities provided by Microsoft Entra ID. By configuring managed identities within an Azure File Sync deployment, these identities will handle authentication in several key scenarios: the Storage Sync Service authenticating to the Azure file share, registered servers authenticating to the Azure file share, and registered servers authenticating to the Storage Sync Service. To further simplify the setup and improve security, managed identities are now enabled by default for all new Storage Sync Services. Configuration can be completed directly through the Azure portal, eliminating the previous dependency on PowerShell. This updated experience is being gradually rolled out across all Azure regions. The feature is available at no additional cost in all Azure Public and Government cloud regions, making it a recommended approach for customers seeking enhanced security and simplified identity management.
Azure NetApp Files Flexible Service Level (Preview)
Azure has introduced a Flexible Service Level for Azure NetApp Files, now in public preview, allowing customers to independently configure storage capacity and throughput for greater cost and performance optimization.
Key Features & Benefits
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Customizable Throughput: Scale throughput independently from capacity, up to 640 MiB/s per provisioned TiB, which is up to 5x higher than the Ultra tier.
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Manual QoS Pools: Supported with manual QoS capacity pools, offering a baseline throughput of 128 MiB/s at no additional cost.
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Right-Sized Performance:
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High throughput for smaller pools – Ideal for SAP HANA, Oracle, and other demanding workloads.
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Cost savings for high-capacity/low-throughput workloads – Reduce cost without compromising storage footprint.
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No Volume Moves Required: Avoid service disruptions or reconfigurations when scaling performance or storage.
This new service level offers unprecedented flexibility, allowing customers to fine-tune Azure NetApp Files performance and cost based on exact workload requirements.
Azure Local
Azure Local – 2503 Update Released
The 2503 update for Azure Local has been officially released as of March 31st, introducing a set of baseline enhancements focused on improving registration, deployment, and overall management experience. This update reflects ongoing efforts to simplify operations and bolster security within Azure Local environments.
Key changes include a shift in the extension installation process: extensions are no longer installed during the registration phase but are now deployed during machine validation. Additionally, the local UI used for bootstrapping has been deprecated in favor of the Configurator app, providing a more modern and flexible onboarding experience. The Arc registration flow has also been streamlined—Service Principal Name (SPN) is deprecated, and a simplified Arc installer script now relies solely on the Start-ArcBootstrap
command.
The update also supports composed images for OEMs and enables deployment of both current and previous versions of Azure Local. While the Azure portal supports the latest version, prior versions must be deployed using dedicated Azure Resource Manager templates.
Other notable improvements include enhanced security for the Bootstrap service, integrated environment checks for connectivity and validation, improved update applicability logic, and support for downloading platform update packages via URLs. Finally, users can now connect to Azure Local VMs over SSH or RDP from within the host network, removing the requirement for line-of-sight access.
Azure Local Performance Metrics Dashboard
Microsoft has introduced the Azure Local Performance Metrics Dashboard, a powerful new tool designed to provide comprehensive visibility into the health and performance of Azure Local systems. With over 60 metrics collected by default—at no additional cost—this out-of-the-box solution delivers actionable insights across storage, network, and compute resources.
Metrics are automatically gathered by the TelemetryAndDiagnostics agent, which is configured during deployment, enabling seamless access to system telemetry without requiring manual setup. The dashboard offers deep visibility into several critical performance areas:
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Storage Performance: Includes disk read/write operations and throughput, volume latency, and insights into VHD and physical disk activity to help optimize storage usage.
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Network Performance: Monitors data transmission metrics such as Netadapter Bytes Sent/Received, RDMA traffic, and VM-level network activity for early detection of bottlenecks or connectivity issues.
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Compute Metrics: Tracks memory usage (available, assigned, used, pressure) across host and guest environments, along with CPU utilization metrics for both host and virtual machines.
This centralized performance dashboard empowers administrators to proactively manage their Azure Local environments, facilitating data-driven decisions to maintain system efficiency and reliability.
Support for 4-node switchless configuration
Microsoft has introduced official documentation to support 4-node switchless configurations, expanding the deployment options for Azure Stack HCI and other Azure-integrated infrastructure solutions.
This update provides organizations with the flexibility to deploy smaller, cost-effective clusters without the need for dedicated network switches between nodes. The switchless architecture simplifies the physical setup and reduces hardware requirements while maintaining essential performance and connectivity capabilities for supported scenarios.
By adding support for this topology, Microsoft continues to enhance deployment versatility, especially for edge and branch environments where simplicity and space efficiency are crucial.
Conclusion
Over the past two weeks, Microsoft has introduced a slew of updates and announcements pertaining to Azure Infrastructure as a Service (IaaS) and Azure Local. These developments underscore the tech giant’s unwavering commitment to enhancing its cloud offerings and adapting to the ever-evolving needs of businesses and developers. Users of Azure can anticipate improved functionalities, streamlined services, and enriched features as a result of these changes. Stay tuned for more insights as I continue to monitor and report on Azure’s progression in the cloud sphere.