The DTM API requires authentication on every endpoint using over HTTPS.
Basic auth credentials should be sent in the format of ORG_ID:API_Key in place of Username:Password. Credentials must be sent with every request.
Cross-Organization Endpoints
Some endpoints are cross-organization and do not require the ORG_ID value. Authentication for these endpoints should be sent with an empty string value for ORG_ID in the format :API_KEY
