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Component-based programming has exploded in popularity. Today, almost no application is designed without using components in some form, typically from different vendors. The need to exploit components distributed on remote machines has evolved as applications have become more sophisticated. Checkout Sterling Services for more info. An end-to-end e-commerce solution is an example of a component-based application. Orders must be sent to a back-end Enterprise Resource Planning (ERP) programme from an e-commerce application on a Web farm. The ERP programme can be installed on different hardware and run on a different operating system in many cases.

The Microsoft Distributed Component Object Model (DCOM), a distributed object infrastructure that allows an application to call COM components on another server, has been ported to a variety of non-Windows platforms. However, since DCOM has never found widespread adoption on these platforms, it is seldom used to promote contact between Windows and non-Windows machines. ERP software vendors also build Windows modules that use a proprietary protocol to communicate with the back-end device.

Any of the facilities used by an e-commerce application may not even be located in the datacentre. For example, if the consumer purchases products with a credit card, the e-commerce application must enlist the help of a merchant bank to process the credit card details. However, DCOM and associated technologies such as CORBA and Java RMI are restricted to software and modules deployed inside the corporate datacentre for all practical purposes. The fact that these systems by default use proprietary protocols, which are fundamentally link based, is one of the main reasons for this.Clients connecting with the server over the Internet face a variety of possible communication barriers. Corporate routers and firewalls have been implemented by security-conscious network administrators all over the world to block virtually all types of Internet communication. To get a network administrator to open ports above the bare minimum, it always takes an act of God.