History of SK Communications
Value chain model
Business strategy
Information systems that support these strategy
Photo messenger service
History of Empas
Value chain model
Competitive model in both company
Business strategy
Business model
Empas challenge
Suggestion and obsercations to increase performance
SK communications serves link portal site 네이트 닷컴
communty leader 싸이월드 first mover in korea masenser 네이트온 , game portal site 땅콩
that 3 kind modles are in mutual assistance state. 'nate.com' can get a money through search service market, "nate mall" and 쵸재깅 uses cyber money which is called 도토리 in their business

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