le data service development. Fortunately, the FCC has begun to require the openness to third-party CPs in the new round of licensing. The almighty strategy that South Korean operators are implementing is effective to integrate competitiveness among diverse players in the industry and developing high-quality contents based on oper- ators' abundant resource. In South Korea, which has both leading technologies and relatively small market size, almighty integrator controlling the entire value chain might be the best way or at least necessary evil to make inroads into the world market and compete with other global companies. However, it internally contains the risk which is able to damage diversity of business ecosystem in the long term and hinder in fair competition for customer. According to the previous analysis, we say that mobile data contents are more prosperous in China and South Korea than the United States, and this difference basically is originated from operators' business strategy and market situation. However, there are some facts we have to notice when we consider implementing the keystone strategy of China and almighty strategy of South Korea. In the implementation of a keystone strategy, the regulators and operators should pay much attention on the management of value creation process. The experience from China shows that the lack of effective regulations on this new market may result in frauds in service provision, which will degrade the reputation of the whole industry. And the information asymmetry among the players can bring badly negative effects on the value-sharing schemes. That means the players with the control of more information can get improper value by cheating others. Service Delivery Platforms It is extremely important to improve data transparency among the participants in the ecosystem. Technology is only a beginning in developing mobile data services; marketing is the more important part. In marketing, to promote the highly diversified mobile data services, accurate market segmentation