Joe (01)
Thanks for the feedback. As you noticed I forwarded your comments on the
e-Gov EA organizers. Perhaps he may be a keynote for the EA Conference
in September. (02)
Regards
Ira (03)
Chiusano Joseph wrote: (04)
>Thanks for forwarding this Ira - David Linthicum has been one of my
>strongest technology influences over the past several years (I've told
>him that). He is also local to the DC area (he lives in Centerville VA),
>in case we'd ever like to have him speak at an event (I would be happy
>to broker this).
>
>Before getting into my observations, I would like to point out that
>Toyota actually has *four* steps to SOA[1]. Will we soon be down to only
>one?:)
>
>One thing that I would like to point out about Dave's presentation -
>which I know he would agree with as an observation - is that his 12
>steps are somewhat of a bottom-up approach to SOA, which is probably the
>most frequent approach that one will see; but not the only one. I say
>this because he doesn't arrive at defining processes until step 9 (so
>it's more like "deriving" processes from services), whereas a more
>"top-down" approach would come at it from above and decompose processes
>into services.
>
>Both approaches are, in general, valid - it all depends on what problem
>you are trying to solve, the scope, the funding, etc. I used quotes for
>"top-down" because when I hear that, I always ask myself: top of what? A
>function within a department? A department within an organization? An
>organization itself? etc. And if you are at the "top" of a department
>within an organization, from the standpoint of the organization itself
>you are really doing "bottom-up" SOA anyway.
>
>I think all would agree that if one is doing "top-down" SOA at the
>highest level (the enterprise level), then you are doing enterprise
>architecture, in a service-oriented manner (what some may call
>"service-oriented enterprise architecture"). Other than that, one should
>always question what "top" means.
>
>Joe
>
>[1]
>http://www.computerworld.com/developmenttopics/development/webservices/s
>tory/0,10801,109387,00.html?source=x606
>"Four Steps To SOA"
>
>Joseph Chiusano
>Associate
>Booz Allen Hamilton
>
>700 13th St. NW, Suite 1100
>Washington, DC 20005
>O: 202-508-6514
>C: 202-251-0731
>Visit us online@ http://www.boozallen.com
>
>-----Original Message-----
>From: soa-forum-bounces@xxxxxxxxxxxxxx
>[mailto:soa-forum-bounces@xxxxxxxxxxxxxx] On Behalf Of Ira M. Grossman
>Sent: Thursday, March 30, 2006 5:51 PM
>To: soa-forum@xxxxxxxxxxxxxx; CAF Mailing List; CAF Forum
>Subject: [soa-forum] "12 Steps to SOA" Excellent SOA Presentation and
>Podcast
>
>I heard David Linthicum's keynote at the EA Conference in Orlando FL on
>March 22, 2006. His "12 Steps to SOA" Keynote presentation and podcast
>
>can be found at
>
>http://soaexpertpodcast.libsyn.com/index.php?post_id=72115
>
>David's keynote was the best and clearest explanation of what is a
>Service Oriented Architecture (SOA). For convenience I attached the
>PowerPoint slides which can be downloaded from the above URL.
>
>The presentation helped me better understand the concepts of SOA..
>
>Ira Grossman
>Chair, Chief Architects Forum
>
>
> (05)
--
Ira M. Grossman
NOAA OCIO
Chief Enterprise IT Architect
1315 East West Highway (CIO-PPA1)
SSMC3 Room 9752
Silver Spring MD 20910
ph 301 713 3345 ext 140
cell 301 266 0157
fax 301 713 3554
ira.m.grossman@xxxxxxxx (06)
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