The adoption of usage-based pricing models in SaaS businesses has increased significantly, with 39% now employing this approach, leading to improved Net Revenue Retention (NRR) and potentially enhancing a company's value by 12% for every 1% increase in NRR over five years. Lago, a modern metered billing platform, supports this trend by providing a robust technical infrastructure that facilitates sophisticated pay-as-you-go pricing strategies and enhances billing accuracy through its event-based architecture. The platform's features, such as real-time event processing, automatic duplicate prevention, and flexible aggregation engines, enable companies to accurately track and bill usage, thereby reducing customer churn and driving organic revenue growth. Lago's open-source nature and API-first design allow for seamless integration with existing systems, offering transparency and customization that appeal to businesses looking to implement scalable and flexible pricing models. By simplifying the billing process and providing detailed usage insights, Lago helps businesses optimize NRR and achieve sustainable growth through better customer retention and value alignment.