If you have a business website, it is likely that you will want to use it to get attention for your brand; to gain customers and to generate profits. The problem a lot of people find when they launch a website is that it is very hard to get seen on search engines.
The main way customers will find your site is either through typing the full website address (unlikely unless they already know of you!), or by searching for the products you sell. Getting visitors through search engine queries is a great way to generate sales, but there is a process to go through in order to get your site seen on search engines like Google.
This process is called Search Engine Optimisation. This is a fancy name for doing bits to your site in order to help Google and the like to crawl your website. They can then rank your website for keywords relative to your products or services.