Intranet Change: Evolution or Big Bang?
http://www.steptwo.com.au/papers/kmc_bigbang

Goldstein, Sarah
Step Two
2005

Abstract:

When planning improvements to an intranet, two main approaches can be taken: the ‘big bang’ and evolutionary approaches. The big bang approach involves making a single, site-wide change to the design and structure of the intranet as the old site is replaced by a new one. In contrast, the ‘evolutionary’ approach makes gradual changes over time, evolving the capabilities and design of the current intranet. This article discusses the differences between the big bang and evolutionary approaches to intranet development. Guidelines are provided on when to use each approach, along with a range of practical tips and suggestions.