In Service Studio you can expose Web Blocks owned by your eSpace to be used by others. In this context, eSpaces are called Producer and Consumer, respectively.
This feature could help you, for example, to isolate and share company portal and image elements in a single eSpace.
Exposing a Web Block
In a Producer eSpace, set the Public property of your web block to Yes and publish the eSpace.
You cannot expose a web block of your eSpace when:
Your web block has a link - screen reference, Link widget, or Button widget - with arguments of data type Binary Data, Record, or List.
In these situations, an error message is presented and the eSpace is not valid.
Use Web Block References | Web Block Properties