In the subscription model, users are charged a predetermined fee on a routine basis (e.g., monthly, quarterly, annually) in exchange for continuous access to a specific product or service. This model has proliferated across various industries, particularly in digital sectors like software (Software as a Service - SaaS), content (streaming services), and even physical goods (subscription boxes). It offers businesses a predictable revenue stream and customers the convenience of automatic renewals. The rise of the subscription economy has transformed how businesses and consumers interact, emphasizing long-term relationships over one-time transactions.