The internet grows. And as the trends and needs shift, the technology that powers it also needs an upgrade. Websites that make the web are like those businesses that operate them. They are complicated and could be difficult to manage.
Especially when it comes to upgrading or updating.
Websites consist of the front-end and the back-end. Both are fragile as any change or replacement to its parts can easily affect or even break the whole system. So any added or removed elements of a website can introduce new errors, flaws, bugs or even faults.