In today's complex defense environment, armed forces face the pressing challenge of ensuring seamless data interoperability among diverse military systems and units. This white paper discusses the critical role of Data Interoperability (DI) in enhancing joint and coalition forces' operational success. By exploring the adoption of open standards, modular system architectures, and the integration of artificial intelligence (AI), we address the pressing concerns and solutions critical for defense contractors and military strategists aiming to overcome interoperability barriers. Our insights are tailored for those seeking to navigate the intricate landscape of modern military operations, ensuring data flows flawlessly across different platforms for superior decision-making and strategic advantages.