Factor in the requirements of other applications. Go for quality, especially if you are buying a quality software application. This is a long-term investment. It will pay off. Just as a person who speaks only English has trouble talking with someone who speaks only French, computers must also have a common language.
Protocol layer defines the network language.
Bandwidth determines how much data can travel from one computer to another in a given time. Just as superhighways can carry more traffic than country roads, wide bandwidth can carry more data traffic. Integrate your data . Replacing an older system sometimes requires running both the old system and the new system concurrently for a while. This is an excellent way to fine-tune the new system, to address any peculiarities, and to work out any differences.