Experience and technical skill. These are the two critical factors that will determine the success of any SEO work. We always look at SEO as part of the wider picture of user experience and conversions. I.e. what is and what is not working on the website. There is no point bringing more traffic to a website through SEO that doesn’t convert a visitor into an enquiry or sale. That’s why, a good SEO provider should give high priority to mobile traffic. Mobile SEO is the most important part of Google success.
They should also talk to you about the need to provide quality content updates at least once a month – without that Google will not consider the website to be ‘looked after’ and it needs the updates to show activity. A good service provider will offer content solutions as an optional part of the package.