SaaS is popular among businesses of all sizes, from small startups to large enterprises, due to its low cost of entry - often using subscriptions - and vast, near-unlimited scalability. SaaS businesses can generate income by charging customers for subscription services or through one-time fees for additional features, making them highly profitable over time. To make money with SaaS, you need to provide a valuable product or service that meets the needs of your target market. You'll work hard on customer acquisition to create loyal, paying customers. Simple, right? Let's get into SaaS.