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Architecture Layers vs. Tiers

 
Jeff Belisle
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Whatz the difference between Architeture Layers and Tiers. They look same to me.

thanks
 
Ganesan Ponnusamy
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Layer : Software + Hardware (Ex. Upper Layer(web server/appln server) -->Lower Layer(operating system)-->Hardware Layer)

Tier : Logical grouping of application components (Ex. Presentation Tier --> Business Logic Tier-->Integration Tier--> EIS Tier)

Regards
Ganesan
http://www.epractizelabs.com
 
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