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IT-SC use microsoft qr-codes creation toinclude qr bidimensional barcode for microsoft ISO Standards Eventually, solid archite qr-codes for None cture frameworks like RM-ODP become quite attractive to these organizations, because they help architects think much more effectively about managing infrastructure. Exercise 2.4 Describe a case-study experience for your organization as a useful lesson learned for other developers.

Which products, versions, and platforms were utilized How did you use and customize the applications to meet the needs of the application . Background for Solution:. A case study or "experien QR Code JIS X 0510 for None ce report" is quite different than a design pattern although they both share lessons learned. A case study is a specific instance of a successful solution. As you write this up, think about answering the questions that would be most useful to developers encountering a new architecture problem.

What elements of the solution are most reusable, in a way that saves time and eliminates risk for readers about to define a new system architecture Exercise 2.5 Describe the infrastructure dependencies of one or more current applications in your organization. How would you re-architect these systems in their next generation to accommodate technology change more effectively .

Background for Solution:. The worst case is if you QR for None are applying vendor technologies without profiling conventions and user-defined APIs. Unfortunately, the worst case is also typical of most organizations. Suppose a vendor provides 300 APIs to access its product.

Your developers will use alternate sets of APIs for each project and even within a single system. If you want to migrate to something else, you have a supreme challenge. Consistency in use of product features can work wonders for enabling interoperability and maintainability.

The userdefined APIs, although proprietary, are very much under control and not likely to be vendor specific, e.g., CORBA IDL interfaces.

To resolve these issues, you need to simplify the choices for how to utilize vendor products (i.e., using profiles) and clearly identify which aspects will be vendor independent.

Reliance on standards is one step. Definition of profiles shows that you have sophistication in the use of standards and products. Exercise 2.

6 Which standards are being applied in your organization Do they supply the desired benefits Are there any profiles for these standards in your organization Why or why not Develop a plan, listing the recommended profiles of standards for your organization. Explain the rationale for why your organization needs each profile specification..

IT-SC Background for Solution:. Standards, while being on e step away from vendor dependence, pose many of the same challenges as integrating with vendor-specific APIs. By definition, standards are very general purpose, applying to as many types of applications as possible. Therefore, the management of complexity is not an important goal for the standards writer.

In fact, many standards are overly complicated in order to create barriers for vendor competition. Sophisticated application architects know this, and they plan to manage this complexity, e.g.

, profiles. We apologize for being so singled-minded about profiles, but this is a key solution concept that most organizations miss with resulting negative consequences. In one of our favorite quotes, a senior executive laments that "We have created a set of fully standards-compliant stovepipes which can"t interoperate.

" It"s dead obvious why that"s happened. You didn"t read our book. Not that we created the concept, which is nearly as old as IT standards themselves.

Exercise 2.7 Describe the quality-of-service requirements for the distributed infrastructures in your organization (or customer). What qualities of service are readily supported today What qualities of service could be usefully added What distributed technologies would be applicable to meet these needs .

Background for Solution:. A quality of service (QoS ) is an important category of architectural requirements for distributed infrastructure. Do you need reliable communications, e.g.

, funds transfer Do you need to support continuous media, e.g., desktop video teleconferencing How reliable How continuous How secure These are important questions that drive the selection of infrastructures, the migration plans of enterprises, and the practices of enterprise architects.

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