Nothing will budge or move a bit without any investigation or research. Especially, in SEO efforts the importance of analyzing the facts (about website) must be very useful to conclude already existing errors and things that are to be sorted out. Without going to the depths of any SEO activity, you just can't hold the success as it will result in complete failure.
By analyzing the facts, you can easily implement best suited strategy or methodologies. Being familiar with the latest technologies is also one of the important aspects of this (SEO) phenomenon. Resources, know how to and what to do is the key things for SEO.
