What is PSI?

PSI can refer to several technologies depending on the context. It commonly refers to Private Set Intersection (PSI), a cryptographic technique that allows two parties to compute the intersection of their sets without revealing any information beyond the intersection itself. It's used in scenarios where privacy is paramount, such as comparing contact lists, matching healthcare records, or identifying overlapping customer databases without revealing the entire dataset. Other possible meanings of PSI include PageSpeed Insights (a Google tool for analyzing website performance) or potentially other acronyms specific to certain industries or technologies. Please clarify the context if you need a more precise explanation.