SEO requires a great deal of strategy and know how to climb the Google ranking. It requires a great deal of strategies an a well executed plan. If you are just getting started with a new site or blog I strongly suggest you take my course on Udemy which will teach you all the different techniques needed for improving SEO.
SEO is a must for being successful. Many newcomers have proven over and over it is completely impossible to buy the amount of traffic needed to be successful online. Getting a high number of Organic traffic is a must for success. Take a look at the chart below which shows the url, Alexa ranking for each site, and Google rank. These are all important factors Google considers when they are calculating the amount of backlink juice for each site. This shows how much each site is worth in a sense for backlinks and which site is better than the other.