Update simple dynamic values like colour codes, or prices.
Variables allow you to easily edit a value in one place and have it change everywhere that it appears on your website.
For example, the price of a service, rather than manually changing it everywhere that it appears.
But it can also be used to control something behind the scenes of your website, like a Hex colour code, or could even be used as a toggle to enable or disable an area of your website. The possibilities are endless!