Based on six key indicators
Getting websites to link to your site is difficult & time consuming. The best SEO companies use creative strategies to build your back links. Their is a major difference between high quality links and poor quality links.
Ensuring that your site is structured properly for search engines is step 1. Optimizing your current content and helping you add additional valuable content is step 2.
Ideally, you want to see a report that you can directly relate to an increase in your companies revenue. Keys metrics are an increase in site visitors and search engine rankings.