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Fortune 100 IT professional and specialist in IT governance architectures.
Interests: Music, history, philosophy, spirituality.
Recent Activity
Part III of the series, "Architecture, Agile, and personal re-invention" In the previous post we covered lightweight virtualization and its usefulness for architects. On to the actual software environment. OK, so Vagrant gives you raw servers. You still need to... Continue reading
Posted yesterday at lean4it
Part II of the series, "Architecture, Agile, and personal re-invention" As I discussed in my previous post, I've taken the DevOps challenge to heart and am going to gemba to understand it better. This has required an intensive round of... Continue reading
Posted 2 days ago at lean4it
Thanks Mark. There was some chatter that Pat Debois and others wanted to treat the Wikipedia page as normative, but I don't know where that went. I like Gene's definition but wish it mentioned feedback.
Part I of a new series, "Architecture, Agile, and personal re-invention" Architects and analysts have a lot in common, and I've been some combination of both for quite a while. We deal in abstractions, because we have no choice –... Continue reading
Posted 4 days ago at lean4it
Absolutely. Currently Calavera supports just unit testing but my intention is to expand it to integration and performance testing.
Toggle Commented Jan 13, 2015 on DevOps simulation for education at lean4it
Hi Simon, I have not completely thought through that side of things, but it will doubtless involve some of what Troy Magennis has explored (see his book on Amazon) with Monte Carlo and Kanban. Charlie
Toggle Commented Jan 6, 2015 on DevOps simulation for education at lean4it
Updated 3/22 Calavera is now in a full 6-node alpha release. ================================ I am announcing the Calavera project, a DevOps walking skeleton for education purposes. This is the continuation of my previous post, A DevOps Simulation for Education. Since that... Continue reading
Posted Jan 5, 2015 at lean4it
The "IT vs Business" meme is popping up on Twitter again. I've covered this here and here, but let's just recap: 1. Humans have always depended on tools and technologies. Therefore the use of technology is inextricably intertwined with what... Continue reading
Posted Nov 30, 2014 at lean4it
Thanks Eric. I recognize that many are absorbed with the cultural aspects of DevOps, and that's not a domain I have as much to say about. Although it's interesting watching the students self-organize into teams and how their experiences mirror mine in large enterprise organizations. Perhaps I'll have enough insights eventually on that front to contribute something. Tying functions to DevOps is something that I have touched on in the book and also have worked on in the IT4IT standard - more on that forthcoming. The most interesting thing for me is that we can see a DevOps pipeline as a sort of microkernel of IT delivery. By building on that, my hope is we can gain a better, more grounded understanding of more abstract IT management concepts.
Toggle Commented Oct 29, 2014 on DevOps simulation for education at lean4it
Updated 1/18: The project is live. See the Calavera Project on Github. As some of you may know I have a night job as an adjunct for the University of St. Thomas in St. Paul, MN. The class is Software... Continue reading
Posted Oct 26, 2014 at lean4it
I'm familiar with the idea of pace layering in general (multi-speed) but am wondering if there are any detailed treatments of it. Reinertsen suggests that cadences can be harmonic multiples, which would be one technique for achieving coordination across the layers.
Toggle Commented Sep 29, 2014 on Agile and Enterprise Architecture at lean4it
Thanks Dave - sent to you. SAFe (Leffingwell) is definitely a key player here although controversial in the Agile community. It's one of the few manifestations of Agile that recognizes the need for EA. I hope to see some of the SAFe folks next week at the Lean Systems conference in Nashville.
Toggle Commented Sep 29, 2014 on Agile and Enterprise Architecture at lean4it
Thanks Anders. Yes, I tend to see solution architecture as scoped to one system. Perhaps this is an overly limiting view. However, my points apply to the higher level EA views - capability, data, value chain, etc.
Toggle Commented Sep 28, 2014 on Agile and Enterprise Architecture at lean4it
drop me an email (char AT and I'll send. Thanks!
Toggle Commented Sep 24, 2014 on Agile and Enterprise Architecture at lean4it
This blog is inspired in part by Jason Bloomberg's recent critiques of Enterprise Architecture (EA) and discussion of Agile EA at Netflix. Agile EA has been a topic for some time, with Scott Ambler being a notable pioneer. Various authors... Continue reading
Posted Sep 24, 2014 at lean4it
Processes cross functions. Processes (e.g. Quote to Cash, Idea to Production) are what actually deliver value. We need both process and function; we can’t organize solely around either. Therefore, get used to matrix management. The above statements are the management... Continue reading
Posted Aug 21, 2014 at lean4it
In discussions on Twitter today I want to clarify some things. It is true that the ITIL Service Strategy volume has some discussion of these issues, including a brief discussion of queuing theory specifically applied to just the service desk. However, these ideas are not generally perceived as core to ITIL. When I use the term "ITIL" here it is in reference to the entire ecosystem and its generally perceived effects, at least as I understand them. It is fair to say that my statement "In general, ITIL assumes that the processes have infinite capacity" is not strictly correct in terms of all the material presented in Service Strategy. I concede this point. The broader point however is that ITIL, in its training and implementation, does not put the actual execution of IT work foremost as Kanban does. It does not embed as a fundamental concern the daily flow of work through the IT organization: the handoffs, the overloaded resources slammed by multiple unmanaged queues gridlocked by highly variable work in process. In my view, ITIL has contributed to, not mitigated these issues by proposing a complex process architecture without a comparably robust execution model. Nor do I see full coverage of the principles and theories that gave rise to the Agile and DevOps communities. I cannot agree with those who say that "It's all in ITIL if you read it carefully enough." It simply is not. Does that mean ITIL is valueless? Of course not. Like my own books, it is merely in need of evolution. As a brand and platform, it could be powerful for defining the next generation of IT. But version 2011 cannot be seen as the last word.
Toggle Commented Jul 27, 2014 on ITIL and Kanban at lean4it
Crystallization. Sometimes, after staring for years at a problem, clarity just happens. Today, in this LinkedIn debate, the following occurred to me: In ITIL, services are supported by processes. In Kanban, services are supported by teams of people with WIP... Continue reading
Posted Jul 12, 2014 at lean4it
Just realized "Case" should be somewhere on the left as well.
Toggle Commented Jun 8, 2014 on The DSE Model at lean4it
Hi Troy, I have Strategy appearing towards the bottom of the left leg. I view it as demand, not supply - we define strategies which include new products to test, executed via some combination of projects, releases and deployment. But it's interesting, thinking about the middle ground -- again the idea is that the middle is about where supply meets demand. I would view the lower middle as more about the highest level results of the firm - stock price, revenues, etc. Execution at the most general. The *results* of the Strategy as combined with the Supply. Thanks! Charlie
Toggle Commented Jun 7, 2014 on The DSE Model at lean4it
Thanks - appreciate - yes, I am very interested in other shared services, however I have also raised some concerns about them in this era of "two-pizza teams" ( ) - I think that tail-dropping FIFO queuing is their fundamental weakness and if we want to get out of the pendulum of forming and tearing down shared services teams they really have to get better at execution and optimization for value. You are absolutely correct however that servic management is not only about IT. I continue to see IT as one of the major functional "views" we have on the modern enterprise, other views including finance, HR, marketing, sales, and legal. Every activity of meaning can be interpreted through any of those views. I have proposed the meaningful aspects of the IT view here: I'll continue for my part to focus on the intersection of applied computation and communication with service management - that's a big enough topic! Regards, Charlie
Toggle Commented Jun 7, 2014 on The DSE Model at lean4it
Hi Jan, I need to look more at ISM - is there a summary I can examine without having to purchase the full publication? When you say it is a standard, what do you mean by that? Is it under open governance?
Toggle Commented Jun 7, 2014 on in search of the PMDB and PIs at lean4it
Thanks - yes, Lean Startup is very much on my mind as I write this batch of posts - can you elaborate on the UX side?
Toggle Commented Jun 7, 2014 on in search of the PMDB and PIs at lean4it
So, here is my first graphical representation of the Demand/Supply/Execute model for IT service organizations. Full size The intent of this model is to provide an alternative to Plan/Build/Run and its sequential, waterfall, and Taylorist connotations. It is also intended... Continue reading
Posted Jun 5, 2014 at lean4it
Dave - I prefer WIs as well - good call - thanks
Toggle Commented Jun 2, 2014 on in search of the PMDB and PIs at lean4it