In the context of SAP Fiori, converting Tile groups to Fiori Spaces involves organizing and managing Fiori applications more efficiently. The correct assignment in this transition is to assign Pages to Spaces (C). Spaces are higher-level organizational elements that represent a collection of pages, which in turn contain the actual Fiori Tiles (applications). This structure allows for a more flexible and user-friendly navigation experience in the Fiori Launchpad, enabling users to access applications based on different roles, tasks, or topics grouped within specific Spaces.

Assigning Tiles to Pages (A)is a step within this process, but it does not represent the conversion of Tile groups to Spaces.

Assigning Spaces to Pages (B)is incorrect because Spaces are the containers for Pages, not the other way around.

Assigning Sections to Spaces (D)is not a standard terminology or process within the Fiori Launchpad configuration.