http://blogs.msdn.com/granth/archive/2008/09/15/does-tfs-guarantee-event-subscription-delivery.aspx(Incidentally this was a question that I got in my interview loop) One of the components of Team Foundation Server is a Notification Service . The MSDN doc describes it like this: The Team Foundation Notification Service is a reliable, asynchronous publish-and-subscribeen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/granth/archive/2008/09/15/does-tfs-guarantee-event-subscription-delivery.aspx#8955454Wed, 17 Sep 2008 16:17:31 GMT91d46819-8472-40ad-a661-2c78acb4018c:8955454Team System News<p>Erik France on VSTS with Scrum Brian Harry on September '08 DevDiv TFS Dogfood Statistics Grant Holliday...</p>