In Salesforce, page layout refers to the organization of fields, lists, and custom links on a record page. Page layouts determine how information is displayed and which fields are visible, read-only, or required for a particular record type. Page layouts are an essential part of customizing the user interface and tailoring the Salesforce experience to meet the specific needs of users and business processes. Page layouts are managed through the Salesforce Setup area by navigating to "Object Manager" and selecting the object for which you want to configure page layouts. From there, you can create, edit, and assign page layouts.