Complex sentence: From 2003 to 2007, Google Code Jam was deployed on Topcoder's platform and had quite different rule, since 2008 Google has developed their own dedicated infrastructure for the contest.
Split into simpler sentences: From 2003 to 2007, Google Code Jam was deployed on Topcoder's platform and had quite different rule. Since 2008 Google has developed their own dedicated infrastructure for the contest.