It's not only Amazon, Zara, or Nike.. Almost any company/brand you already know, use, love, and trust their products can be a source of passive income. This simple business model is called digital marketing aka affiliate marketing, where you can promote products and services, and get paid commission for sales that happen through you. Almost 80% of companies offer affiliate programs for free that you can join, and they can be on any topic; pet, home & decor, beauty, skin, personal finance,...