Lex Lookup is a Lightning Component that allows users to search for a record and stamp (populate) it on another object, similar to a dynamic lookup. It can be used with any standard or custom object where you need to reference or associate a specific record from one object to another.
The component also displays key details of the searched records, helping users review relevant information before selecting a record. This makes Lex Lookup a flexible and user-friendly tool for dynamically linking records without the need for hardcoding.