Is Azure SQL Database the same as SQL Server?

It runs the same core database engine as SQL Server, so it shares T-SQL compatibility, but it's delivered as a fully managed cloud service rather than software you install and administer yourself.

What is Managed Instance?

Azure SQL Managed Instance is a deployment option offering closer feature parity with on-premises SQL Server, designed to simplify lift-and-shift migrations that need instance-level features.

What are elastic pools?

Elastic pools let multiple databases share a pool of compute and storage resources, which is cost-efficient for SaaS applications with many databases that have unpredictable, non-simultaneous usage patterns.

Database

Azure SQL Database

By Microsoft

IntermediateService5.5K learners

Azure SQL Database is Microsoft's fully managed, cloud-native relational database service built on the Microsoft SQL Server engine, offering platform-as-a-service (PaaS) capabilities like automatic patching, backups, and scaling.

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Definition

Azure SQL Database is Microsoft's fully managed, cloud-native relational database service built on the Microsoft SQL Server engine, offering platform-as-a-service (PaaS) capabilities like automatic patching, backups, and scaling.

Overview

Azure SQL Database runs the same core query engine as Microsoft SQL Server, giving it broad T-SQL compatibility, but removes the operational work of managing servers, OS patching, and backups that a self-hosted SQL Server installation requires — the classic distinction between infrastructure-as-a-service and PaaS relational database offerings. It supports several deployment models, including single databases, elastic pools that share resources across many databases for variable workloads, and Managed Instance, which offers closer feature parity with on-premises SQL Server for easier lift-and-shift migrations. As a PaaS offering, Azure SQL Database provides built-in high availability, automatic backups with point-in-time restore, and elastic scaling, positioning it against other managed relational services like Amazon Aurora and Google Cloud Spanner for organizations standardizing on Microsoft's cloud data stack.

Key Features

Built on the Microsoft SQL Server engine with T-SQL compatibility
Fully managed patching, backups, and high availability
Elastic pools for sharing resources across many databases
Managed Instance option for near-parity with on-premises SQL Server
Built-in threat detection and auditing for compliance
Serverless compute tier that scales down automatically when idle

Use Cases

Migrating on-premises SQL Server workloads to the cloud

SaaS applications using elastic pools for many tenant databases

Line-of-business applications needing managed high availability

Variable-load applications benefiting from serverless compute scaling

Frequently Asked Questions

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