Answer Posted / guest
A two-tier architecture is where a client talks directly to
a server, with no intervening server. It is typically used
in small environments (less than 50 users).
A common error in client/server development is to prototype
an application in a small, two-tier environment, and then
scale up by simply adding more users to the server. This
approach will usually result in an ineffective system, as
the server becomes overwhelmed. To properly scale to
hundreds or thousands of users, it is usually necessary to
move to a three-tier architecture.
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