How do I send a JSON data output to an external website from CRM?

How do I send a JSON data output to an external website from CRM?

We currently have a workflow that creates a folder on our local drive when a new Product is created and stores the folder address in a field. I would like to send this field and the unique reference number of the Product as a JSON via HTTP when the folder has been created.
How do I go about doing that? I can handle the other end, which recieves the data and processes it, easily enough.

Thanks