SEO stands for Search Engine Optimization, is a practice of improving the website in ways of quality and quantity that helps to rank in the search result and increase the traffic to your website when user search for particular words or phrases. SEO helps start-ups or small business websites rank higher in search engines, which in turn get great number of clients.
SEO always starts with research, audit, and analysis. Every user is different, every website is different, and every industry is different. This is why the best SEO firms are uncertain to make predictions or give guarantees—as there are multiple variables, and what worked very well for one client may not work nearly as well for the next.