SEO is Search Engine Optimization. In general the goal of a Search Engine Optimization company is to get your company / business website into highly coveted top rankings on search engines. Your business will have specific keywords that you want to rank highly for so that when a person sees results of a search your website is at the top. The keywords your business targets should be specific to your service or product offering.

Search engine results pages contain a mix of advertiser sponsored (paid) and organic (non-paid) listings. Most business owner's don't want to pay for advertising and with the right search engine optimization professionals (TxWorld!) working on their site they shouldn't have to. See http://txworld.com/search-engine-optimization.html for more details.