Description: Web application scaling refers to the process of increasing or decreasing the resources allocated to a web application based on user demand. This process is crucial for ensuring that applications run efficiently and without interruptions, especially during traffic spikes. Scaling can be vertical, which involves increasing the capacity of a single server, or horizontal, which consists of adding more servers to distribute the load. In the context of cloud computing, scaling can also be implemented automatically, allowing resources to adjust dynamically without manual intervention. This not only optimizes performance but also helps control costs, as resources are used more efficiently. Key features of auto-scaling include constant monitoring of application performance, responsiveness to changes in load, and integration with cloud services that facilitate resource management. In an environment where user expectations are high, web application scaling becomes an essential strategy for maintaining availability and customer satisfaction.