...which has to do with applications which have parts that run on many different machines. This is the norm in many of the bigsystems that you see today--so for example Google runs on hundreds of thousands of machines, Amazon is going to be similar...
http://news.cnet.com/8301-1001_3-10217055-92.html
...architecture • test environments 10.b Definition Of Enterprise Enterprise is used as a portmanteau term for: • bigsystems • with a lot of users • with a lot of data • software environments which require stringent –ilities: • reliability • changeability...
http://hypernumbers.com/Hypernumbers%20White%20Paper.pdf