Amplitude is a product analytics platform that allows companies to better understand user behavior in their applications. Examples of data captured by Amplitude are event time, location, device model, click events, etc. With this ability, you will be able to add Amplitude as a data source in the Mage app.
This means you can connect directly to Amplitude and use the analytics data recorded there to create a dataset in Mage without having to manually import any files. Then you can explore the analytics data in Mage before using it to train a machine learning model.