Silver Lake, a private equity firm, agreed to invest $500m in Vertex, a global provider of indirect tax solutions. "Silver Lake has long regarded Vertex as an important pioneer, innovator and leader in enterprise technology solutions for global indirect tax compliance. Adding e-invoicing via Pagero will provide even more value to customers seeking end-to-end integration and automation. We are grateful for the opportunity to work with CEO David DeStefano and Vertex’s management in developing a long-term partnership between our firms," Joe Osnoss, Silver Lake Managing Partner.