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Changing IT infrastructure due to new protocols and standards or simply growth (or cutbacks) at the company Issues of external connectivity to partners, customers, or external agencies All in all, these are not easy issues to deal with, but they are real the cold water dashed on SOA users faces Be alert to possible problems with integration and you will be able to solve them a little more readily

Superstah!

You know what I ve been through Oracle/BEA, IBM, SAP NetWeaver, Microsoft, Rearden Commerce, Sword-Ciboodle, and a multiplicity of other choices, and I can t come up with a winner This is the first time in the history of CRM at the Speed of Light that I can t really distinguish a best-in-class vendor for SOA architecture I m sure that I ll get a What Are you kidding from a few of the vendors; the other ones won t notice at all But think about it This is a good thing It means that the standards, as of 2009, are so well established and are so standard, that there is no winner because they all work pretty much in the same way Pretty much It means that interoperability and communication between enterprises is achievable and that the SOA industry is mature So, as Crosby, Stills, Nash, and Young once warbled, Rejoice, rejoice, you have no choice There is no winner because SOA wins

Interestingly enough, there is another architecture that hearkens back to a simpler day when men were hunters and women tended to the fields and wash oh, wait, that s the Neanderthals of the Middle Paleolithic Era, not IT architecture Wrong tool set Actually, I m talking about representational state transfer (REST), also interchangeably (if not accurately) called web-oriented architecture (WOA) There is one major CRM actually enterprise applications vendor who uses it really well That would be Sage Software (see below) who has always varied from the norm when it came to architectures REST is an interesting and important choice, and, I would venture to say, might even be the architecture of choice if you re a small or lower-end midsized business It s worth more than a look it s worth an investigation

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REST is what I d like to be doing at the moment I m writing this I can t because I m too busy, but I can tell you about the value and the pitfalls of REST architecture Simply stated, REST is a web services architecture that has one and only one interface one that is based on HTTP, meaning a classic web browser Application-specific interfaces are taboo, which is, of course, where it differs from SOA There are only four command states that apply Get, Post, Put, Delete Essentially, it s the same architecture that runs the Internet, and the one you use when you fire up Internet Explorer (or Firefox or Safari or any browser you use), type in a URL, and hit Enter By the way, that would be Get in REST command lingo

Representational State Transfer (REST)

REST emerged from what is now a geek-legendary doctoral thesis called Architectural Styles and the Design of Network-Based Software Architectures, by Roy Fielding, at the University of California, Irvine, in 2000 Fielding, now the chief scientist at Day Software, figured out how to use the standard Internet protocols to interact with data There were only four basic commands (Get, Post, Put, and Delete) and one basic interface a web browser and that was the extent of it The idea was that the URL was the equivalent of a noun, as Ryan Tomayko explained it in his posting, How I Explained REST to My Wife Tomayko s explanation, as gender uncomfortable as it might be, is actually pretty good, whether you re female or male HTTP is a protocol that is used to describe the location of something anywhere in the world from anywhere in the world That location is the URL What Get, Post, Put, and Delete provide are the verbs in this schema These are the universally possible actions that can be read by any machine in any format from any operating system For example, if you wanted to read my ZDNET blog, you would type in the URL http://blogszdnetcom/crm and hit the Enter key on your PC or Blackberry and up would pop my blog s latest entry, which is a representation of the web page The reason that it s a representation is because the web page is being reproduced in multiple other locations at the same time If there was only the original, no one would see it but the first person to access the URL But there really is no original resource There are only representations of the resource That would be, according to Tomayko, the noun Got that so far