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https://purengom.com/2018/08/07/%eb%82%b4%ea%b0%80-ios%ec%99%80-macos%eb%a5%bc-%ec%a2%8b%ec%95%84%ed%95%98%eb%8a%94-%ec%9d%b4%ec%9c%a0-dogfooding/
내가 iOS와 macOS를 좋아하는 이유 - Dogfooding