In Canvas, external tools help to enhance the teaching and learning experience for both instructors and students by adding more functionality to the Canvas system.
An instructor can get these external tools by using these options and you can align it within the context of your course as you see fit. External tools can be added to Modules, Course Navigation, the Rich Content Editor, and Assignments.
To add external tools to your course:
Click on the Add New Tool button.
Fill out the following information in the pop-up window: