BI Daily : Powerpivot, Excel, Sharepoint and SSRS feature overlapping and comparison
When you have a requirement and you start selecting technologies or components, you might find more than one technology that can serve the same purpose on the same platform. For example you can create Dashboards using Performancepoint, also you can use SSRS to create a report that feels like a Dashboard, and also you can make Dashboards in Sharepoint by putting a few inter-related webparts together.
Read this very interesting post from Chris Webb where he explains the apparent overlap between the technologies listed in the subject of this post. Also he shares a quite interesting insight on how using different features from these technologies can help to create an interesting solution.
URL: http://cwebbbi.spaces.live.com/blog/cns!7B84B0F2C239489A!6393.entry