A development team is designing a new customer-facing web application with a relational database backend. The team needs a managed hosting environment that allows them to deploy application code and store relational data without provisioning, patching, or managing underlying virtual machines or operating systems. Which combination of Azure Platform as a Service (PaaS) solutions should the team implement?

Azure App Service and Azure SQL Database: ### What Azure App Service and Azure SQL Database Are **Azure App Service** and **Azure SQL Database** are core **Platform as a Service (PaaS)** offerings in Azure. Azure App Service provides a fully managed hosting platform for web applications, RESTful APIs, and mobile backends. Azure SQL Database is a fully managed relational database-as-a-service built on the Microsoft SQL Server database engine that automates infrastructure management, software patching, and high availability. ### How They Meet the Requirements * **Managed Application Hosting**: Azure App Service allows developers to deploy code directly (e.g., .NET, Java, Node.js, Python) without having to configure, maintain, or update underlying **virtual machines** or web server software. * **Managed Relational Storage**: Azure SQL Database manages relational tables and schemas while completely abstracting the underlying operating system and physical storage. * **Automated Operations**: Both services handle routine administrative tasks automatically, including **automated backups**, **OS patching**, **scaling**, and **monitoring**. ### Key Advantages and Capabilities * **Built-in High Availability**: Azure SQL Database and App Service include built-in redundancy and high-availability guarantees without requiring complex cluster setup. * **Productivity Focus**: Developers can focus entirely on writing business logic and database queries rather than infrastructure configuration. * **Flexible Scaling**: Both services support rapid scaling up or scaling out to handle variable user workloads seamlessly. * **Integrated Security**: Provides native support for features such as **TLS encryption**, **Azure Active Directory authentication**, and private endpoints. ### Why This Is Optimal Choosing Azure App Service together with Azure SQL Database delivers a pure PaaS architecture. This eliminates operational overhead related to server maintenance, allowing development teams to deploy modern web applications quickly with minimal administration costs.