...
Biggest cost savings with non-customization.
Deployment tools
Deployment tools, possibly with some use for deploying contributed bundles as well:
Fabric, Python tool
Chris and Nate
for doing deployments http://docs.fabfile.org/
Are Per Nate, there are similar tools in other languages
At CARET, Chris M's colleagues use rollout tools, disaster control, when a server goes down or is hacked
Get up in minutes on a new VM slice
Puppet http://puppetlabs.com/
can talk to Tony at CARET about this