Abstract
This paper argues that a cross-platform strategy for the computer platform providers. The analysis of VMware case demonstrates the mechanism changing the balance of power between layers by introducing cross-platform functions, i.e. “Intervention" and “Bridging" into the existing market. Consequently, the three effects are propounded, which indicates 1: interrupting direct interface between upper layer and lower layer, 2: weakening selective inevitability for same level layers, and 3: adding liquidity of each accessible user group.