If you are writing applications using ASMX, Remoting or Enterprise Services today, the impact of Indigo’s arrival can be immediate if you want to make it so. If you code your applications today following the guidelines explained by Joe Long @ http://msdn.microsoft.com/longhorn/understanding/pillars/indigo/migratevideo/, you should have a fairly smooth upgrade path to Indigo. The goal is that upgrading code will be simple and mechanical in most cases. Listen to this talk to learn how you can ensure a smooth migration path between existing Microsoft technologies and Indigo.