Cloud integration enhances web app scalability by allowing applications to dynamically adjust resources based on demand. With cloud services, web apps can scale up to handle peak loads by automatically adding resources and scale down during off-peak times to save costs. Cloud providers offer infrastructure on demand, making it easier to manage traffic spikes without the need for upfront investment in physical servers. For example, using load balancers and auto-scaling features, a web app can distribute incoming requests across multiple servers, ensuring stable performance even with fluctuating user loads.

Cloud integration also enables distributed data storage, meaning that web applications can store and access data from multiple locations, reducing latency and improving speed for users globally. In addition, cloud providers often have content delivery networks (CDNs) that cache content at data centers worldwide, helping to further optimize speed and responsiveness.

By leveraging cloud integration, developers can build applications that are resilient, flexible, and cost-efficient, adapting in real-time to user demands. For anyone looking to understand this process more thoroughly, a web development course with a focus on cloud communication and scalability principles would be beneficial.