This document discusses data exchange in Linnworks, including importing, exporting, and querying data from third party sources. It covers setting up scheduled or instant uploads and extractions of data in a consistent CSV format. The presentation provides rules for the CSV file format, such as avoiding scientific notation, properly formatting special characters, using unique column headers, and including default values, expressions, and extended properties. It also discusses automating data exchange on schedules and running ad hoc query reports to access data as needed.