Process builder is a graphical tool in salesforce that allows users to automate business process. It has simple interface which allows you to click and point to select different salesforce objects and its fields.
Process builder is similar to workflow but it is more powerful than workflow.
There are several different actions that a salesforce builder can use. They are below.
- Trigger APEX code.
- Email Alerts.
- To trigger a flow.
- Post information to chatter.
- Submit for approval.
- Update records.
Process builder can do much more than workflow in comparison, such as : Post to chatter, update child records, submitting records in approval process, invoking apex or flows etc.