EPCIS (EPC Information Services) is a standard that allows companies to securely share information about product movements. This provides visibility and improves business processes. EPCIS defines interfaces for capturing and querying event data, like when a product was observed, and master data, like product locations. Event data records things that happen at specific times, while master data provides context for interpreting events. Companies can use EPCIS to record event data from business processes and query that data to gain insights into their supply chains.