DevOps helps businesses respond to business, project and market changes quickly and fluidly. I’m not sure if fluidly is a word, but if its not, well, it should be. Devops focuses on many smaller high-quality software updates being rolled to users with a rapid schedule. Using continuous delivery and continuous testing to reduce risk, garner user feedback and smoothly improve software in small easy bite-size chunks.
Arcad Software has a great description of DevOps:
Instead of managing huge transformations with a major user impact, DevOps produces a steady stream of smaller incremental changes that are more reliable, with less overall impact and more readily accepted by users.
DevOps is an organizational change that depends on automated, tool-based collaboration between all actors in a software project: from developers, to testers, operations and end-users.
I’ve subscribed to this software development techinque for years – so check out there description here