Sources let you pull live data into Clay. There are two main types of sources, webhook and direct integrations.
Webhook: Clay's webhook source allows you to stream any data into your table by simply sending events to an endpoint, for example website signups, Zapier integrations, Typeform responses.
Direct integrations: Clay's library of source integrations allows you to pull directly from your tooling with a simple auth, for example querying data from Linkedin, streaming in events from your Segment.
Note that sources are built to feed your table live data, meaning that they pull in new data on a schedule (soon to be configurable!).
Learn more about connecting your first source in the following guide: Connect your leads, signups, and customers.