The type of programming that involves writing code that can operate in multiple programming environments is known as cross-platform programming. This approach allows developers to create software that runs on various operating systems or devices without needing extensive modifications. Technologies like Java, Python, and web-based frameworks enable this versatility. Cross-platform programming increases code efficiency and reduces development time and costs. By facilitating broader distribution, applications can reach a wider audience, enhancing usability and access across different platforms and devices.