post https://dy-api.com/v2/feeds//bulk
EU endpoint: https://dy-api.eu/v2/feeds/{feedid}/bulk
Usually, a product feed is updated periodically. However, if you have a large number of products in your feed, updates can take some time. To avoid this, you can use an API to update only the changes in your feed (remove or add specific items, change item properties, and so on), and make changes to the feed more quickly.
Support site article: Creating and Syncing a Product Feed Using APIs