Cafe24 and Kakao Sign Partnership to Vitalize E-commerce Marketing. Cafe24 and Kakao are joining hands to provide e-commerce merchants with big data marketing. Global e-commerce platform Cafe24 signed an MOU with Kakao on Dec. 3 at Cafe24's headquarters in Sindaebang-dong, Seoul, to join efforts in vitalizing e-commerce marketing. The agreement will integrate Cafe24’s e-commerce platform with KakaoTalk’s easy registration, a business solution that provides new member registration and marketing services through KakaoTalk. Online store merchants will now be able to provide their customers with easy registration and login services through KakaoTalk accounts. Also, targeted marketing using customer big data will accelerate online business growth.