Open platform is introduced and has become popular in the domain of consumer electronics. One of the main issues dominating the field of platform-based development concerns how to better maintain platforms to secure intended productivity and quality. A platform provides its service functions by means of APIs. Therefore, the key to successful development of a platform lies in sucessful development of relevant APIs. In this context, evolution of APIs, which accompanies that of platforms, is a factor that enevitablly occurs and requires our constat attention. This study proposes a multi-view impact analysis model for platform maintenance. This model traces APIs and their correspondent work products such as implementations, test cases and applications that use APIs. In addition, tools and ideas have been proposed as well to address the migrating nature of applications.