On June 2, Microsoft pushed out over a hundred Azure updates in one coordinated drop. Two areas dominated: AI agents and databases. Here are the topics worth knowing and why each one is interesting.
Azure HorizonDB
HorizonDB is a Postgres-compatible database, in preview since Ignite. Microsoft already has two managed Postgres options, so the reason for a third matters: it uses shared storage with scale-out compute – the same architecture as AWS Aurora and Google AlloyDB – so compute and storage scale separately and there’s no sharding to manage. Microsoft’s existing distributed Postgres (the Citus engine) shards data across nodes, which is harder to run. HorizonDB also has vector search built into the engine using Microsoft’s DiskANN index, so RAG retrieval can run inside the operational database instead of a separate search service. It’s Microsoft’s answer to Aurora and AlloyDB, and a play for the Postgres migrations coming off Oracle.
Cosmos DB and DocumentDB
Cosmos DB: per-partition automatic failover, changing partition keys on the NoSQL API, and an all-versions-and-deletes change feed mode all went GA. In preview: distributed transactions, native Azure Backup, a cost estimator, and a relational-to-NoSQL migration assistant. DocumentDB, the Mongo-compatible engine, added instant free-tier clusters and service-managed failover. Changing partition keys and distributed transactions are the notable ones – both were long-standing gaps in Cosmos.
MCP across the platform
MCP (Model Context Protocol) showed up as a built-in surface in several services the same day: an MCP Toolkit for Cosmos DB (GA) and DocumentDB (preview), a data-plane MCP server in API Center, MCP servers as knowledge sources in Foundry IQ, and a workspace-wide MCP for Databricks Genie in Copilot Studio. The interesting part is the timing: MCP went from a community pattern to something Azure services ship natively, across several products in one release wave.
Foundry agent features
Several agent capabilities went GA: Hosted Agents in the Foundry Agent Service (managed agent hosting) and Voice Live integration. Two new models landed in the catalog, MAI-Image-2.5 and MAI-Transcribe-1.5. Logic Apps can now call Foundry Agents directly, and a new Logic Apps automation SKU targets agent workflows, which puts agents in the low-code integration layer. On governance, Azure Policy now covers the Model Router and Global PTU reservations became region-agnostic, so reserved capacity isn’t tied to one region.
Azure AI Search
OneLake catalog integration and a GenAI prompt skill went GA. In preview, Purview sensitivity labels and access auditing now apply to knowledge sources. The Purview integration is the interesting part: it adds data-governance controls to the retrieval layer that RAG apps depend on.
Speech and Translator
GA: the LLM Speech API, Speech SDK 1.50, a Unified Text Translation API, and image, PDF, and Office document translation in AI Translator. HD voice HDv2.5 is in preview. The Unified Text Translation API consolidates the translation features under one API.
Compute and VMs
New Arm-based Cobalt 200 VM series (Dpsv7, Dplsv7, Epsv7, Mpsv4, Lpsv5) are in development, Azure Linux 4.0 is in preview, and VMSS Flex got automatic OS image upgrades. Cobalt 200 is Microsoft’s own Arm silicon, following AWS Graviton – more of the fleet moving to in-house chips.
Containers and AKS
Azure Container Linux is GA on AKS, AKS Fleet Manager now manages Arc-enabled clusters, and App Gateway for Containers added Istio service-mesh integration. The Fleet Manager change extends multi-cluster management to clusters running outside Azure.
API Management
Wildcard custom hostnames went GA on Premium v2 and Standard v2. A Unified Model API for multi-model AI apps is in preview, which lets one API front multiple AI models – relevant if you route across models.
Monitoring
Simple log alerts and dynamic thresholds for log search alerts went GA, along with OpenTelemetry metrics and visualizations in Azure Monitor for VMs and Arc servers. Simple log alerts are a lower-friction path than the existing log-search alert rules.
Storage and Files
A file-share-centric management model (Microsoft.FileShares) for Azure Files went GA. Secure access to Azure Files on macOS with Entra ID is in preview – native Entra-authenticated SMB from a Mac, which previously needed workarounds.
