Definition - What does Data Feed mean?
A data feed is a mechanism for delivering data streams from a server to a client automatically or on demand. The data feed is usually a defined file format that the client application understands that contains timely information that may be useful to the application itself or to the user.
A popular form of data feed is the Web feed, which carries information for real-time Web applications. A common form of this is the rich site summary (RSS) feed, which allows blogs and other websites to automatically send timely news excerpts or notifications to all those who have subscribed to the RSS feed.
Techopedia explains Data Feed
The data feed is often in the form of a file that contains information structured according to the specifications of the application receiving the data. The information is arranged in tables, with columns and rows, or with tags. The file types can vary, but formats like XML and CSV are common because of their structure, and even plain text files are supported by some because of their simplicity, which allows even non-technical individuals to easily create their own data feeds.