Designer Experience consists of several components that can be moved, resized, reorganized, or closed.
Visit Customize Designer Cloud User Interface for more information.

Figure: Designer Experience
The workflow canvas is the area where you build a workflow. A workflow consists of a series of tools that perform different functions to process data. A workflow is saved as a .yxmd file type.
Search, which is located in the top-left corner of the tool palette, searches the Designer Cloudtools.