1,441 words, 8 minutes read time. Many of us fall into the trap of viewing SharePoint Framework (SPFx) as a collection of isolated UI components, but that mindset is exactly what leads to fragile, unmaintainable systems. If your entire development strategy begins and ends with individual web parts, you’re not building a solution—you’re building a graveyard of redundant code, incompatible…

What is application customizer and why we use it? Application customizer is part of the “SharePoint Framework (SPFx) extensions” and replace some methodology to develop SharePoint stuffs such as 1. Adding JavaScript to every page in a site/web 2. Injecting some content (e.g. a mega-menu/global navigation or message bar) into every page 3. Popping up dialog boxes in an integrated way 4. Adding items…