The Relationship Between Dev-Ops And Continuous Delivery: A Conversation With Jez Humble Of ThoughtWorks

Jeffrey Hammond

If you've been reading the research I've been writing over the past year, you know that I'm a fan of implementing an application life-cycle management strategy that focuses on increasing development flow and supports high-performance teams. You don't need to religiously implement all 22 CMMI processes or deliver dozens of intermediate development artifacts like some leading processes advocate. Rather, there are certain important processes that you should spend your time on. We wrote about change-aware continuous integration and just-in-time demand management in last year's Agile Development Management Tools Forrester Wave™. They are two of my favorite areas of focus, and they are great areas to invest in, but once you have them working well, there are other areas that will require your focus. In my opinion, the next process where you should focus on flow is everything that happens post build and preproduction. Most folks think about this process as release management or configuration management, but I think there's a better term that focuses on how quickly software changes move through both processes. It's called continuous delivery. When you focus on establishing a process of continuous delivery, you'll find that your capacity to release changes will increase, your null release cycle will shrink, and a larger proportion of the productivity gains you've seen from your Agile development efforts will flow through into production.

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Release Management And The "First Rule Of Holes"

Jeffrey Hammond

 

Ever hear about the "First Rule of Holes"? It's pretty simple — if you find yourself in a hole with a shovel, the first thing to do is.... stop digging!

That's kind of what it's like in app dev when it comes to release management: We've dug ourselves a pretty deep hole, and it's impacting our overall ability to ship software on time. We recently ran a survey of app dev professionals that confirms what we hear in our client inquiries: Most development leaders are frustrated with slow software delivery and their release management process (see Figure). While Agile speeds software design and development, it doesn't do much to speed up release and deployment — creating a flash point where frequent releases collide with slower release practices.

But some organizations have stopped digging themselves in deeper. They are working with their peers in operations to streamline release management and cutting steps into the side wall of their hole so that they can climb out, step by step. Here are five steps that they are taking:

  1. Investing in improving their pre-build processes. Many problems that occur during a release cycle have their root cause in inadequate pre-build tasks and activities.
  2. Expanding release management throughput. Projects that have large code bases or extensive testing cycles are using parallelism and intelligent testing processes to speed up the early stages of the release cycle.
  3. Optimizing their release pipeline. After taking care of the early stages of the release pipeline, advanced teams are implementing virtualization, parallel testing, and developer self service to further compress their release cycles.
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