In an effort to compete, there has been a shift from the traditional two-tier systems
to the n-tier systems in the enterprise. A two-tier system is composed of two
independently written programs that communicate with each other. Until
recently, the two-tier was the most prevalent approach to designing and building
business systems. It probably is still the most common. The n-tier has a subtle
distinction there is no requirement for the components to be installed or
deployed on different hardware. Two examples of a two-tier application are
printing a document and a point-of-sale system that gathers business data
throughout the day and sends it back to the central server that aggregates data.
An n-tier application is self-contained, like your online e-mail account. Now,
technically, there is a client the Web browser, but for all intents and purposes,
the e-mail logic to receive, store, and send e-mail is self-contained on the server.
The n-tier application architectures give a tremendous advantage, such as
economies of scale, for the enterprise systems. It also gives a tremendous advantage
to the outside world. You can pass along the cost of data entry and many
management processes to the consumer or business entity. The business is happy
to save the money, and you are happy to have the business at a more affordable
cost. It is a win-win situation. Getting to that state, however, is not a simple
effort. The companies that adopt these technologies may undergo a rather turbulent
shift while learning how to develop and support their new applications. In
some cases, these shifts are so dramatic that companies find themselves with an
outdated workforce that they need to retrain. At times, they will have duplicated
the systems that they are maintaining during the transformation.
Companies that choose to revamp their systems have to make extremely difficult
decisions in order to make the move. But making the change is important. It
gives them the ability to compete in today’s market. Making the shift to the new
technologies gives the companies the flexibility they need to reach a worldwide
market. So the question becomes not do we move to this new technology, but
how do we move to it?
Good technologists who understand the technology can make the transformation
go very smoothly. One challenge, however, is that with the newer technologies,
there are not as many technologists who have a comprehensive
understanding of how all the technologies work together. And even if you do get
a good technologist, one may not be enough. The companies that try to transform
and have bad experiences often drop these leading-edge programs in favor
of a more simple approach to their information systems. And they may try this
transition process multiple times before they are successful. Now, more than ever,
businesses need to have a focused approach to developing and implementing
these complex systems. The businesses that can handle the shifts are finding that
they are better able to compete in this information-driven technological age.
With businesses becoming more dependent on application servers it is important
to know what one is. An application server is a software engine that handles
its own business logic and delivers services to a client. It is used for just about
anything, from lead generation to customer relationship management (CRM),
Web applications, and almost everything in between. Companies depend on
these systems to be reliable for their mission-critical applications. The missioncritical
applications are now available 24/7. In an online world, that requires
companies to continually update and enhance these systems to keep up with the
competition. Many of today’s companies use the application server for their critical
business needs, including large telecommunications companies, banks, trading firms, energy companies, finance companies, and many more. A minute of downtime may result in hundreds of thousands of unrecoverable dollars. In addition to dollars lost, the perception of the company may also be damaged. Customers
expect to be able to log in and take care of business at all hours of the day.
The challenge is in learning how to meet that expectation. If your company is
unable to maintain its systems and provide the best experience for its customers,
then another company certainly will be able to do so.