What It Takes To Make A Scalable Web App A scalable web app is one that can handle an increased workload. There are various ways in which an increase in workload can come about. For example, the web app may need to deal with a larger amount of data. The web app might need to handle requests at a higher rate. What Does A Scalable Web Application Look Like? There are different interpretations of web application scalability. We say a web app has “scaled up” when the higher scalability is a result of strengthening the hardware. On the other hand, “scaling out” denotes adding more hardware. There are also other ways to talk about scaling, e.g., “vertical scaling”, and “horizontal scaling”. You add more hardware resources to achieve vertical scaling. On the contrary, you design or architect your application to handle more parallel traffic in case of horizontal scaling. Scalability is one of the most critical conditions for the succ...