Description: Function scaling in Azure Functions refers to the ability of these functions to automatically adapt to the demand for computational resources. This means that during peak loads, Azure can increase the number of function instances to handle the additional traffic, and when demand decreases, it can reduce the number of instances, thus optimizing resource usage and costs. This feature is fundamental in cloud computing environments, where variability in workload is common. Azure Functions use a serverless execution model, allowing developers to focus on application logic without worrying about the underlying infrastructure. Automatic scaling is based on performance metrics and user configuration, enabling a quick and efficient response to fluctuations in demand. This not only improves operational efficiency but also ensures that applications are more resilient and capable of handling unexpected traffic spikes without service interruptions.