# Sample data in AWS Data Exchange
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A *sample* is a small part of the data in your product on AWS Data Exchange that is intended to show what the entire data set is like.

Subscribers can view and download samples before they subscribe to your product to evaluate if your product meets their needs.

You can upload up to 10 samples to each data set with a maximum size of 50 MB. The accepted file formats for samples are any file type accepted by Amazon S3. Samples in .csv format can be previewed.

**Note**  
Samples are attached to a product and associated with a data set. If you want to have more than 10 samples for potential subscribers to evaluate, you can create two or more versions of the same product with the same data sets. Then, add up to 10 samples to each product.

For more information about how to add a sample to a product, see [Publishing a new product in AWS Data Exchange](publishing-products.md).