While it is easier than ever to build a website these days, it still takes a good chunk of time and effort. There are literally billions of websites, all vying for the short attention spans of internet users.
Your website will invariably link to other web pages. These links will be either internal or external. Internal links direct users to another, relevant page within your own site. External links take them to a page on another website. Very few things frustrate users more than 404 page error that occurs when a link is broken or dead