CGI or Common Gateway Interface is the process for scripts to communicate with your hosting server. The folder for CGI scripts is what we call the cgi-bin. It is created in the directory root of your website and where your scripts are permitted to run or execute. The cgi-bin folder will store the scripts such as Perl used by your website.
Technically, CGI improves the visualization of your website. This is especially useful for e-commerce websites. CGI provides visitors with great visual content to help them understand the product and ultimately become one of your customers. CGI is used extensively nowadays for marketing, virtual reality, architecture, and even artistic purposes. You can now imagine how useful and advantageous CGI is for a simple website to achieve that 3D look or realistic effect on online visitors.
Where do you find cgi-bin?
The cgi-bin is located in the directory root of your website. If there are no scripts stored in that folder, you can delete that folder. It should not be a problem with your website. However, if there are scripts in it and you are unsure if those are essential to your website, it is best to leave them there.