The Space Name macro will, as it says, return the name of the current space. This allows you to write copy that refers to the name of the organisation that you are writing about.
An example of where you might use the {Space Name} macro is the Authorized Contacts page.
Appears as
You also have an Option to Add 's to Space Name by Checking the Checkbox (1)
As you can see on the Preview, it will be SpaceName's
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