Ø An extension of 3-tier architecture is nothing but
n-tier architecture
Ø Service layer is one machine ;data layer in one machine;
presentation layer is in morethan one machine.i.e. windows based enterprise
application can be 3-tier architecture cannot be ‘n’ tier as presentation layer
runs in only one machine as one process.
Ø Web-enabling a 3-tier architectural enterprise
application is nothing but making it n-tiered.
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