Affiliate Marketing (also known as performance-based marketing) is one of the most cost-effective strategies to bring in new clients. Because you will pay only when traffic towards your website converts into real transactions (buying a product, filling a contact form, signing up to your newsletter, downloading an e-book, etc.) you low the risks and save on marketing costs.
Cost-per-Action emerged as an alternative to other forms of online advertising such as Cost-Per-Click and Cost-Per-Acquisition.
Read here the full article to learn more and see if this is something that might be worth trying for your business.