Data silos refers to isolated collections of data that are inaccessible to other parts of an organization. These silos occur when departments or systems store and manage their data independently, leading to a lack of integration and communication. Data silos can hinder collaboration, create inefficiencies, and result in incomplete or inconsistent information across the organization. Breaking down data silos involves integrating systems, standardizing data formats, and promoting data sharing to ensure a cohesive and comprehensive view of organizational data, enhancing decision-making and operational efficiency.