An SMS Gateway is a service that allows businesses to send and receive text messages (SMS) over mobile networks. It acts as a bridge between the internet and mobile phone networks, enabling applications to communicate with users via SMS. This is useful for notifications, alerts, and marketing campaigns. By using an SMS Gateway, companies can automate their messaging processes, ensuring timely communication with customers. It supports various features like bulk messaging, two-way messaging, and integration with other software systems, making it a valuable tool for enhancing customer engagement and improving service delivery.