This document discusses platform strategy for service players. It notes that a platform includes an operating system, SDK, applications, distribution system, and business model. It then discusses open APIs, noting that Daum provides APIs for contents, local, map, and mobile map services. Implementing open APIs faces challenges including resources, service changes, authentication, standards, and documentation. The document suggests that service players provide vertical open APIs for social, search, and media. It notes that open APIs are not platforms themselves, but rather SDKs, and that developers just want access to data. The document concludes that a social curation service could be a right platform strategy for service players.