SEO focuses on organic visibility through search engine rankings. SEO is not a frequent work, even when you are spending money, you do not have to frequently spend money for SEO. You do it one time and it will give you lasting results. In contrast, PPC means you run ad campaigns frequently, and you will be paying for each click. Yes, you can drive immediate traffic but you need to spend money. SEO is an investment that gives you profits in the long run, PPC gives you immediate benefits but you need continuous efforts for sustained sales. Interestingly, combining these two strategies will help you to maximize online presence and generate revenue.