Hiring an Azure Web Sites developer is beneficial as they have expertise in Microsoft's cloud computing service, Azure. They can design, build, and manage powerful web applications on a robust, flexible, and scalable platform. They ensure high availability and performance of your websites, while also making them secure. Their knowledge in various programming languages, databases, and Azure tools allows for seamless integration with other services. They can also implement cost-effective solutions, as Azure allows for payment only for resources used. Their skills can facilitate business growth by accelerating digital transformation.