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Welcome to eGyanKosh, your comprehensive resource for academic materials tailored to meet the needs of students pursuing their studies at Indira Gandhi National Open University (IGNOU). In this section, we present Unit 4: Electronic Data Interchange System, a crucial component of contemporary learning in the field of information technology and business communication. Designed to enhance understanding and facilitate effective learning, this study material is available for free download for the academic year 2025. Dive into the intricate world of electronic data interchange, explore its applications, and equip yourself with the knowledge necessary for success in your coursework and future endeavors. Whether you’re preparing for exams or seeking to bolster your expertise, eGyanKosh is here to support your educational journey.