The rapid evolution of digital technologies has transformed the way organizations collect, process, and utilize information for decision-making. The integration of Big Data, Cloud Computing, the Internet of Things (IoT), and Decision Support Systems (DSS) has created intelligent ecosystems capable of real-time analytics, automation, and predictive decision- making. IoT devices continuously generate massive volumes of structured and unstructured data, while cloud computing provides scalable storage and computational resources. Big Data technologies analyze this information to derive valuable insights, and DSS helps organizations make informed strategic and operational decisions. This paper explores the collaboration among these technologies, their architectures, applications, benefits, challenges, and recent trends across various sectors such as healthcare, agriculture, smart cities, transportation, and industrial automation. The paper also highlights future directions including edge computing, AI integration, federated learning, and enhanced cybersecurity frameworks.

Dr.Pooja Nahar, Dr.Vandana Srivastava, Dr.Vipin Kumar Jain, Dr.Vaibhav Sharma, Dr.Vandana Vijay, "Collaboration of Big Data, Cloud Computing, IoT, and Decision Support Systems in Recent Trends" International Journal of Advanced Multidisciplinary Research and Educational Development, V2(4): Page(200-204) July - August 2026. ISSN: 3107-6513. www.ijamred.com. Published by Scientific and Academic Research Publishing.