Return on Investment. I can be calculated via the same method as ROAS, but in the interest of diversity, I'll show you an alternate option to calculate it. To calculate the ROI on a campaign, you can take the gross profit from running the campaign minus the cost of running the campaign and divide it by the cost of running the campaign and times it by 100 to get a percentage that the investment returned. Example – if you spent $200 to run a campaign and you made a gross profit of $600, you would take $600 (gross profit) – $200 (campaign cost) to get $400 and then divide $400 by $200 (campaign cost) to get 2 and multiply that by 100 to find a 200% ROI for the campaign.
Let no one tell you that email marketing is dead. An email list is crucial for every affiliate marketer. You can start building up your email list with a lead magnet (like the information products mentioned previously) or even just by encouraging your audience to sign up for your updates. You can then push your content to this audience via email and also direct them to your affiliate offers. Don't be sleazy about the sales, but if you build up enough trust with your email audience; when the time comes, they will not mind purchasing a product from you. 
Great stuff here Sean – thanks for all of these insights and sharing some best practices when it comes to affiliate marketing. I’ve never been comfortable giving it a shot, but after reading this post and your perspective on how and when to do it, I may just have to give it a try. Especially considering I’m already mentioning and recommending services and products on my site, I’m just not getting the potential rewards associated with doing so. Thanks again.
But more than just that, 75 percent of shoppers shop on Amazon most of the time. And Amazon has awesome conversion rates—the rate at which a customer who visits the site actually purchases something. If you’re talking about Prime customers, as many as 74 percent of them convert. That’s compared to an average of less than 10 percent for most retail sites!
So, there you have a comprehensive answer to the question – what is affiliate marketing? It can benefit a wide range of businesses and delivers a strong return on investment. The setup requires some initial work to define program terms and create promotional content for affiliates to use. However, once this is completed, affiliate marketing can be a relatively passive source of revenue.

Affiliate marketing pulls together marketers who want to advertise and publishers, sometimes called influencers, who want to promote products and services and get paid to do so. Publishers place customized links to things they want to promote within their website or social media content. Then, they get a portion of the sales as a thank you for their promotion.

Adam Enfroy is the Affiliate Partnerships Manager at BigCommerce. With 10+ years of experience in digital marketing, ecommerce, SEO, web development, and selling online courses, he is passionate about leveraging the right strategic partnerships, content, and software to scale digital growth. Adam lives in Austin, TX and writes about building your online influence by scaling your content and affiliate marketing strategies on his blog.
Affiliates work to introduce their visitors to the merchant’s brand. They might write a post about a new product or promotion on the merchant’s site, feature banner ads on their site that drive people to the merchant’s site, or offer visitors a special coupon code. If people come from that affiliate’s site and make a purchase, that affiliate gets paid.
Affiliate marketing has increased in prominence with the internet age. Amazon popularized the practice by creating an affiliate marketing program where websites and bloggers put links to the Amazon page for a product being reviewed or discussed in order to receive advertising fees when a purchase is made. In this sense, affiliate marketing is essentially a pay for performance marketing program where the act of selling a consumer on a product is outsourced across a potentially vast network.
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