A way to improve the performance of your API request is by requesting a partial response receiving only the data that your application is interested in. This allows your application to perform more efficiently.

By default, the server sends back the full representation of a resource you requested. For improved performance, you can request only the fields you need.

To request a partial response, use the fields request query parameter and specify the fields you want returned.

You can use the fields parameter with almost all endpoints. An example for the fields request
E.g. /?fields=product-content-heading,product-content-introduction