Extensions give your website added functionality, often solving an individual or group of problems together. They can be made compatible with a wide range of versions of whichever platform they’re used for, making them a great way to share a solved problem with others.
Extensions are easy to install, a problem that would have required extensive programming could now be solved simply by uploading an extension to a website and clicking install. This means anyone can solve problems on their website themselves if they can install an extension that would fix it.
The ease of installation and variety of functions available have meant anyone can build an amazing website. It’s even possible without any programming knowledge.