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Fortune 100 IT professional and specialist in IT governance architectures.
Interests: Music, history, philosophy, spirituality.
Recent Activity
Bernard Golden has some good thoughts on bi-modal IT . My view is summarized in this picture: By my reading, there is nothing in current Agile theories (especially Reinertsen) supporting the hypothesis of bi-modal IT. We need parametric IT, not... Continue reading
Posted Apr 27, 2015 at lean4it
I’ve been working with Vagrant over the past few months, and recently started investigating Docker hands-on in my lab. Both container technologies are impressive and useful and are changing the face of application delivery. But I have questions about licensing... Continue reading
Posted Apr 25, 2015 at lean4it
interesting - thanks Ivor
Thanks Michael. I see my work as input for the standards community. My intention is to identify new constructs and ways of thinking, as hypotheses for validation. When and if evidence supports them, then they may be appropriate for standards. Reinertsen takes a skeptical look at Critical Chain in Principles of Product Development Flow, and I think provides better general-case thinking of how to approach the scheduling problem. regards ctb
Toggle Commented Apr 9, 2015 on Emergence: theme of the 3rd edition at lean4it
Still polishing, but my new course description will look something like this: SEIS 660 Information Technology Infrastructure This course covers the engineering and operation of IT infrastructure, and related IT management practices in both theory and practice. Students participate in... Continue reading
Posted Apr 4, 2015 at lean4it
Part V and last of the series, "Architecture, Agile, and personal re-invention" For my long time readers who may be scratching their heads over the last few posts, here's where I bring it back home. Evolving the Calavera simulation of... Continue reading
Posted Apr 3, 2015 at lean4it
"Emergence" by Jack Wolf - 15" X 15" -- Oil pastels on posterboard - Creative Commons - Flickr I am starting the third edition of my book. The 2nd edition came out in 2011, and already the industry and my... Continue reading
Posted Mar 31, 2015 at lean4it
Part IV of the series, "Architecture, Agile, and personal re-invention" On a different topic: I've supplemented this whole adventure with some personal productivity upskills that became essential: Linux desktop Asciidoc toolchain My main Windows 7 workstation was badly corrupted, to... Continue reading
Posted Mar 29, 2015 at lean4it
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 Mar 25, 2015 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 Mar 24, 2015 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 Mar 22, 2015 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