Webhook

You can use webhooks to add custom business logic in both Dialogflow ES and Dialogflow CX. You need to write some code running on a remote server to build webhooks, and the data sent to your webhook will be in a pre-specified format, and you need to ensure that the data returned from your webhook is also in a pre-specified format.

This is what a webhook definition looks like in Dialogflow ES:

It is important to note that one of the reasons CX is considered to be much better than ES is that you can develop a lot of this custom business logic within the CX user interface itself instead of relying on a developer.

In addition, in CX webhook endpoints (the URL where the data is sent) can be defined per intentBoth Dialogflow ES and Dialogflow CX have the concept of int... More, while in ES you will define a single endpoint for the entire agent.