Getting online market is growing in leaps and bounds, the O2O service market will further expand in the future. O2O services are very similar to open market services and they are one of the most successful Internet business models. Moreover, O2O commerce usually handles not only products, but also services. Nowadays companies tend to pursue O2O marketing because it permits smarter consumption for consumers as well as successful promotion for companies. Korea appears to be well positioned for the spread of O2O and rapid growth is expected in this cutting-edge O2O commerce international market. That is because those main sections of O2O service are the best, which are in-road rate of smart phones and frequency of mobile shopping. Furthermore, we have to focus South Korea and other global cases because it will have a chance to gain experience about O2O market.