An executive assistant wants to onboard a new cloud-based product to help with business analytics and dashboarding. Which of the following would be the BEST integration option for this service?

A. Manually log in to the service and upload data files on a regular basis.
B. Have the internal development team script connectivity and file transfers to the new service.
C. Create a dedicated SFTP site and schedule transfers to ensure file transport security.
D. Utilize the cloud product's API for supported and ongoing integrations.