What is Affiliate Marketing?
Definition + Examples
Definition
Affiliate marketing is a performance-based channel where third parties (affiliates) earn a commission for driving a measurable result — typically a sale, but sometimes a lead or a sign-up — for an advertiser. Affiliates promote the advertiser through their own content (blog posts, YouTube videos, email lists, social media), and they're paid only when their referrals convert. Tracking is done through unique referral links, coupon codes, or post-purchase attribution.
Why it matters for small businesses
Affiliate marketing is performance-pure: you only pay when a sale happens. For small businesses and growing brands, it's a way to access distribution you couldn't afford on a fixed-fee basis. Major affiliate-driven categories — finance, software, fitness, fashion — see 15–30% of revenue come through affiliate channels at established brands. The category includes everything from a single blogger with an affiliate link to a network like ShareASale or Impact connecting brands with thousands of publishers.
Examples
SaaS affiliate program
A SaaS company pays a 25% recurring commission to affiliates for the first 12 months of a referred customer's subscription. After two years, 18% of new MRR comes through 80 active affiliates, with the top 10 driving 60% of that.
DTC affiliate code
A DTC brand runs an affiliate program where each affiliate gets a unique discount code that gives 10% off to customers and 10% commission to the affiliate. They onboard 400 affiliates in a year, of whom 90 drive measurable revenue.
Review-site affiliate
A B2B SaaS startup partners with three category review sites that earn $50 per qualified lead. The review-site channel generates 30% of pipeline in year one, replacing two paid-search campaigns.
How to use affiliate marketing in your marketing
- 01Start with affiliate-friendly commission rates: 15–30% for digital products, 5–15% for physical, $20–$100 flat for leads. Adjust based on margin and CAC.
- 02Use a real attribution tool (Refersion, Impact, PartnerStack, or a built-in referral product) rather than spreadsheets.
- 03Give affiliates real assets — banners, copy, swipe files, demo videos. The easier you make it to promote, the more they'll promote.
- 04Vet affiliates. A few high-quality affiliates beat hundreds of low-effort ones.
- 05Require disclosure of the affiliate relationship per FTC guidelines on every promotional post.
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Start freeRelated terms
Referral marketing is the structured practice of incentivizing existing customers to recommend your business to new customers.
Customer Acquisition Cost is the total amount a business spends to acquire a single new customer, calculated by dividing the sum of all marketing and sales costs over a period by the number of new customers acquired in that same period.
FTC disclosure refers to the U.
Attribution tracking is the practice of measuring which marketing touchpoints contributed to a conversion.