SMS Marketing is a form of direct marketing that uses text messages to communicate with customers. Businesses send promotional messages, updates, or reminders directly to a customer's mobile phone. This method is effective because it reaches people instantly and has a high open rate compared to emails. Companies often use SMS Marketing to inform customers about special offers, new products, or events. Customers usually opt-in to receive these messages, ensuring that the audience is interested in the content. This approach helps businesses engage with their customers in a personal and immediate way.