Recently, there has been more interest in Decentralized Data-Sharing (DDS) because of the introduction of Dataspace 4.0. DDS is becoming increasingly popular as a safe, open, and effective way for many parties to data-sharing. Unlike conventional, centralized methods, DDS has several benefits, such as better knowledge exchange, higher accessibility and interoperability, and data privacy and security. The paper covers DDS’s advantages, including improved resilience, higher security, increased privacy, and improved interoperability. DDS gives people and organizations more control and ownership over their data while reducing the dangers of centralized data management. In this survey, we highlight promising technologies for DDS in Dataspace 4.0, including Federated Learning (FL), blockchain, decentralized file systems, semantic web and knowledge representation, and Peer-to-Peer (P2P) networks. We highlight the challenges, opportunities, and future directions of technology enabling further DDS advancement in Industry 4.0.
