Due to increasing digitalization, most companies have added online retail as a new business model (BM) separate from their initial physical BM, requiring them to manage a portfolio of BMs. The literature points out that companies choose between a separation or integration strategy to manage their multiple BMs. However, business cases show that companies adopting a separation strategy may then plan for a possible integration strategy. Despite the growing knowledge in the BM portfolio literature, scholars and practitioners still lack a comprehensive understanding of the integration process of two BMs that were initially managed separately. This qualitative research draws on a cumulative multiple case study of five retailers to analyze how incumbent firms with different BMs manage their integration. We show that these firms pivoted the management of their BM portfolio. The notion of pivoting has been studied from the perspective of a single BM. In this research, we demonstrate that the process of pivoting also applies to the management of several BMs. Our results provide a generic model of the BM integration process that underlines barriers and enabling pivoting factors. Finally, by considering pivoting at this corporate level, our research adds to the ongoing discussion in strategic management regarding the way companies manage the dynamics of their BM portfolio.