If your company website is the key to achieving your business goals, then you need it to perform. Your website can generate a significant amount of revenue, but without visibility and customer engagement it will struggle to fulfill its potential. One of the most cost effective and long term revenue generating methods is SEO.
When users search for a product or service, unless they are looking for something very specific or hard to find, they rarely go much further than the first page of results. If your company does not appear in that first page of searches then there is a high chance that your potential customer will never know you exist.