PPC paid method
Yes off course PPC is the paid method but this is the best way to get the real visitors that can convert into customers. You will get the customers that will lead your business here.
The most important thing in this technique you do not need to wait for the long to see the results, Instant result you will get with this technique. It would be return on your investment if you are targeting the right keywords and bid more on your search terms than your competitors.