In cloud computing, scalability refers to the capability of a system to handle increasing workload demands by adding resources without affecting performance. This can be achieved through vertical scaling (adding resources to a single server) or horizontal scaling (adding more servers). Scalability is crucial for cloud services, allowing businesses to efficiently adapt to changes in user demand and optimize operational costs. It also supports business growth, as companies can scale their IT infrastructure according to their changing needs, providing flexibility and maintaining functionality. This adaptability is a significant benefit of adopting cloud computing solutions.