Dreamweaver comes with a set of built‑in server behaviors that lets you easily add dynamic capabilities to a site. You can extend the Dreamweaver functionality by creating server behaviors to suit your development needs, or by obtaining server behaviors from the Dreamweaver Exchange website.
Before creating your own server behaviors, you should check the Dreamweaver Exchange website to see if another party has already created a server behavior that supplies the functionality you’d like to add to your website. Often, a third-party developer has created and tested a server behavior that will address your needs.