Optimally Designing Virtualized CDN Maximizing Profit of Content Providers

Abstract

Recently, the virtualized CDN such as Amazon CloudFront has been widely used. In the virtualized CDN, cache servers are provided on virtual machines of cloud datacenters. Using the virtualized CDN, content providers can flexibly select the regions of using cache servers according to the geographical demand pattern of their users, so content providers can expect to reduce the cost of using CDN. However, to maximize the profit of content providers, they need to carefully select the locations of cache servers which affect the quality perceived by users as well as the total cost. In this paper, we propose a method of optimally selecting the geographical regions to use cache servers in the virtualized CDN maximizing the profit of the content providers.