Collection Runner

 Postman Runner  that allow us to run all requests of a collection at once.

When you start /click a collection runner, all requests are run in the order that you see them in Postman UI. So all requests are executed first, by order of the folder, and then any requests in the root of the collection.

 Collection Runner - where we can configure the execution of the requests

Environment- where the execution should happen

Iterations, - number of times the flow should run

Delay - indicates the halting time between each request, and it's not between the iterations