When Mathilda first walked into the glass-enclosed lobby of Data Mining Solutions’ headquarters, she observed an enormous three-
dimensional recreation of the company’s logo—a bright red question mark—hanging from the ceiling. As she was taken on a tour of the building, the same red question mark appeared painted along the hallways, in decals placed on all street-facing windows, and as a screen saver on the company computers. Such corporate branding is an example of which type of observable artifact?
Observable artifacts are symbols, words, languages (they could be slang or jargon), stories of legends, practices. This give those in the future the explanation of what happened in the past or what's currently ongoing with a message to those who come across them.
The observable artifact the organization is using is that of symbols.