Technical SEO focuses on how well the search engine spiders can crawl and index your websites content. While this aspect doesn’t improve your ranking, it is the foundation for off-page optimization. If the search engines can't crawl (read) your website, other efforts won't yield much in the way of results.

On-page SEO primarily deals with the content on your website, how well it is optimized with keywords for your industry and the user experience it provides for visitors. A well optimized web page will use keywords that consumers are searching for in a naturally informative way that doesn't leave the visitor feeling like he or she just read a thesaurus or left empty handed. The key is to give the visitor quality information that either educates them on your products and services or at a minimum lets them know they've clicked on a relevant site.

Off-page SEO is primarily focused on building your websites authority through inbound links from other authoritative websites, blogs and directories back to your website. These natural links from independent and relevant websites act as a vote of confidence, which encourages the search engines to trust and rank your website better. Be cautious when hiring a company to do this, if they promise mass quantities of inbound links immediately I would run. The search engines focus on Quality vs Quantity.