If you find yourself in need to protect your PDF documents, you may decide to add a watermark to them. It can help you to identify the document owner, to maintain some level of traceability, to classify documents, and to assure confidentiality of the information both inside and outside the organization.
Check out the examples below to learn how to apply different types of watermarks to PDFs in Power Automate (Microsoft Flow), Azure Logic Apps, or Power Apps.