Network Architecture - a subcomponent of technology infrastructure architecture

An important subcomponent of technology infrastructure architecture is Network Architecture.

In order to transfer information within and outside the organization, communication between resources, talking to the backed servers, databases, applications (external and internal), in all of this we need a well defined, secured network. Network is nothing but a component that keeps everything connected. In the absence of a well defined, secured, consistent network, the organization will not be able to talk to its various applications, and hence this will lead to a communication/ technology blackhole within the enterprise.

With more solutions being cloud and mobile based, it has become even more essential to define and design a network plan that can not only keep the applications and connection alive but can also handle heavy data traffic.Thus, it is important as a technology infrastructure architect to design a self sustained highly secured network diagram that is well equipped to fight malicious viruses, as well as be able to securely and efficiently let the communication flow.

An example of physical network infrastructure diagram from technet: https://technet.microsoft.com/en-us/library/cc961037.aspx