Over the past four years, the International DORIS Service (IDS) has evolved significantly. There are now seven Analysis Centres from six different countries using five different software packages, all providing regular products to the IDS. These centres cooperate through an Analysis Working Group (AWG), which held six technical meetings during this four-year period. These meetings led to a significant improvement in the precision of the results, and for the first time, seven solutions were available to the IDS for combination and submission for the ITRF2008 combination. To obtain these solutions, several test campaigns were organized to compare results between groups for precise orbit determination as well as for precise ground geodetic positioning. The goal of this document is to present the various activities related to the International DORIS Service within the last four years.