The easiest definition of scalability would sound like the ability of a web app to deal with increasing load without breaking down. When the server gets overloaded, the entire app is affected: pages won't open, images won’t load, etc. To avoid this, ensure the separation of concerns.
Table of contents
The definition of web scalabilityWell-known examples of scalable web applicationsWhy should you build a scalable web application?Introduction to the scalable app architectureBuilding scalable web applications and websitesRequired technologies and frameworksConclusionSort: