The e-commerce 15 conference in Vilnius highlighted the rapid growth of cross-border e-commerce in Europe, with a 16.7% increase in sales for 2014 and strong forecasts for continued expansion. It addressed challenges such as diverse online payment methods and varying consumer expectations across different countries, emphasizing the importance of tailored delivery solutions. The conference also showcased the DPD group's extensive parcel delivery network and their strategies to meet the evolving needs of e-retailers in the cross-border e-commerce landscape.