I have configured an Assistant with some dialog skills. The utterances are passed through Node.JS backend of my application. As a requirement for the project is to use Discovery but in term of a search skill.
My question is: When the request is proceed to a search skill from Watson, the way of returning the result from Discovery is the same like from a dialog skill e.g. Discovery -> Watson Assistant -> Node.JS backend?
(We didn't configure the billing plan yet, that's why I'm asking this basic question.)
When you use Watson Discovery as part of a Watson Assistant search skill, access to Discovery is through Assistant. In terms of the underlying programming, take a look at the Watson Assistant API overview in the docs and at the actual V2 API for Watson Assistant. The search integration is configured is in Watson Assistant and determines how the results are displayed to the user as chatbot answer.
So, from the user view, everything is done through Watson Assistant.