Description: A Payment Validation API is an application programming interface that allows developers to verify the validity of payment transactions in real-time. These APIs are fundamental in the e-commerce ecosystem as they ensure that transactions are secure and that funds are available before completing a purchase. The main features of these APIs include user authentication, payment information verification, fraud detection, and confirmation of fund availability. Additionally, they typically provide quick and accurate responses, allowing merchants and consumers to have confidence in the payment process. The relevance of Payment Validation APIs lies in their ability to reduce the risk of fraudulent transactions and enhance user experience by facilitating a smooth and secure payment process. In a world where online commerce continues to grow, these tools have become essential for any business looking to operate effectively and securely in the digital realm.