It's a common expression, but in my opinion it's lower register.
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Anonymous-wiseIt is a sort of informal suffix, and it means concerning. Technology-wise should be, therefore, hyphenated.
AnonymousThey are more advanced technology wise than the USA.<< How would you formally write it ?>>
AnonymousScenery wise this district is nicer than my district but population wise it is less culturally diverse.In my opinion, this is correct, but casual. (I'd use a comma after "district.")
AnonymousWe aren't that behind in terms of technology.Again, this is a casual expression: "We aren't that [far] behind etc."