API monetization is a burgeoning trend for organizations aiming to increase revenue by leveraging their existing APIs through various billing models, such as post-paid, pre-paid, or pay-as-you-go. Successfully monetizing APIs involves constructing a comprehensive technology stack that includes components like API management, analytics, and billing providers to efficiently handle tasks such as usage tracking and invoicing. Choosing the right stack is essential for meeting current business needs while allowing future scalability and feature expansion. API gateways, like Kong, simplify API security and management, whereas analytics platforms such as Moesif enhance monetization by tracking API usage and integrating with billing providers like Stripe, Recurly, and Chargebee. The selection of a billing provider should consider integration complexity, cost, reporting capabilities, and customer support, as these factors significantly impact the revenue generated from APIs. Tools like Moesif and Kong facilitate a seamless API monetization process by offering comprehensive features for tracking, billing, and managing API usage.