In this contribution, we present a model that retailers engaged in e-commerce (e-tailers)can use for determining the optimal mix of customer segments within a customer portfolio froman integrated risk and return perspective....

Investing in existing customers is widely accepted as a promisingstrategy because it is believed to be less costly than attracting new ones. Recentresearch by Reinartz et al. [39] provides indications, however, that it could alsobe profitable to simultaneously focus on a customer segment being...