Description: The ‘Function Runtime’ in the context of Azure Functions refers to the environment in which serverless functions run, allowing developers to execute code without managing the underlying infrastructure. This environment is highly scalable and automatically adjusts to workload, meaning functions can run in response to events such as changes in databases, messages in queues, or HTTP requests. The function runtime provides a framework for running code in various programming languages, including C#, JavaScript, Python, and Java, among others. Additionally, it allows integration with other cloud services, facilitating the creation of complex and distributed applications. The ability to run functions in an isolated and secure environment also contributes to the efficiency and security of applications. In summary, ‘Function Runtime’ is an essential component of serverless architecture, enabling developers to focus on business logic without worrying about server management or the underlying infrastructure.