expression
only the results matter; it's all about the results
Proverb-like expression emphasizing that the outcome is the most important thing, often used to dismiss excuses or processes.
どんなに努力しても、結果がすべてだ。
No matter how hard you try, only the results matter.
ビジネスの世界では結果がすべてと言われる。
In the business world, it's said that it's all about the results.
結果重視 is a noun/adjective meaning 'results-oriented', while 結果がすべて is a fixed expression stressing that results are everything.
A set phrase composed of 結果 (result) + が (subject marker) + すべて (everything). The exact origin is unclear, but it reflects a common pragmatic attitude.