Rapidly Making Colorful Landsat-8 Imagery Composite with Free Advanced Image Stretching and Pan-sharpening Software from GeoSage - See more at: http://www.gisuser.com/content/view/30197/2/#sthash.36sxzlnJ.dpuf
Thanks to the team at Sanborn for sharing details of how they are now leveraging an open source stack for their web mapping architecture.
In an effort to keep the public informed and make data available to them during the recent wildfires near Colorado Springs, CO the company turned to open source as a solution.
Their blog goes into details of how they luckily, had already been working on a system designed for rapid web publishing and thus managed to roll out a solution built almost entirely on Open Source, with the exception of the ArcGIS Server component (which will be moved to Geoserver in the future).
I suggest you consult the full article from Sanborn about the specific components of the system architecture as they have gone to great lengths to share the solutions that they've leveraged (this post is really meaty and has some awesome pointers for anyone wishing to develop an open source solution)
To see the results for yourself check out the web map and imagery at https://services.sanborn.com/maps/60. More information can be obtained by contacting the author, Scooter Wadsworth, on Twitter (@scooter_w),. Note, those of you headed to ESRIUC 2012 can also catch up with Scooter, Learon and others at Sanborn booth #2500.