Open APIs are a key feature of modern telco stacks, allowing third-party developers and businesses to create value-added services. This openness matters because it fosters innovation, encourages ecosystem growth, and drives faster service delivery. With open APIs, telcos can integrate seamlessly with digital platforms, IoT solutions, and enterprise applications. This flexibility reduces development cycles and enables monetization opportunities beyond traditional connectivity. By embracing an open architecture, the modern telco stack transforms telecom from a closed network operator into a collaborative, innovation-driven platform.