"Claiming 100 percent compatibility with open source PostgreSQL, Microsoft said the database service available on Azure would implement a new storage layer that significantly improves performance, scalability, and availability of the database compared to its other PostgreSQL services. Microsoft already offers Azure Database for PostgreSQL and Cosmos DB for PostgreSQL, which handles distributed tables, but the vendor said the new service would be fully distributed."
"Shireesh Thota, corporate vice president for databases at Microsoft, said: "Developers would choose HorizonDB for its massive read scale without the need to replicate the database between instances, and unique AI features including advanced DiskANN vector indexes that push filters down to improve performance, and AI model management that provides one-click integration into AI Foundry.""
"Microsoft said Azure HorizonDB had been re-engineered for cloud platforms to offer scale and performance "far beyond" that of open source Postgres. It has autoscaling storage up to 128 TB, scale-out compute up to 3,072 vCores, with <1 millisecond multi-zone commit latency, and enterprise security and compliance, the vendor said."
Azure HorizonDB is a fully distributed PostgreSQL-compatible cloud database that introduces a new storage layer to improve performance, scalability, and availability compared with existing PostgreSQL offerings. The service claims 100 percent compatibility with open source PostgreSQL while adding autoscaling storage up to 128 TB and scale-out compute to 3,072 vCores. The design targets massive read scale without instance replication and integrates AI features such as DiskANN vector indexes and one-click AI model management into AI Foundry. The service advertises sub-millisecond multi-zone commit latency and enterprise security and compliance. The launch enters a crowded distributed PostgreSQL market alongside CockroachDB, YugabyteDB, and others.
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