It’s no longer about what you can tell your clients but what they can tell you. It is known in the marketing industry that you can never stand still, your business is either moving forward or backwards, and no successful business should be doing the latter! With tracking techniques being updated constantly we have a better understanding of what your customers like, and where you loose their attention on a website.
All this information is incredibly useful in increasing your conversion rate (this is how many people visit your site compared to how many actually spend money or use your services). Analysing your site will help you understand and improve on what you do well.
Just another thing to consider for your website, no longer is it about getting your company to the top of a Google search and SEO’ing your site to make sure you are found, but once you gave got your customers attention its about understanding their experience of your site and ensure repeat custom.