The communication layers between the two applications that will talk to each other must be able to communicate with each other without errors.
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One can find online collaboration services at AT&T, Dropbox, Bloomfire, IBM, Blackboard, and Cisco. Each of these companies offer a form of online collaboration service.
The communication tools that are necessary for business to operate are effective supervisors that are able to micro-manage and macro-manage like real bosses and are also well-versed on how to put everyone in line.
Effective communication is when you communicate your point and it is heard, understood, and acted upon by those that you are communicating with. Efficient communication is when you communicate something in the least amount of time and effort necessary. It may not be understood, or liked, but it's clear and too the point.
It's called the OSI Model... it has 7 layers. 1) Physical Layer 2) Data Link Layer 3) Network Layer 4) Transport Layer 5) Session Layer 6) Presentation Layer 7) Application Layer
Layer 6 - Presentation Layer