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Is a web app two-tier or three-tier?

Davidsk Liu

Joined: Feb 07, 2013
Posts: 1
Some say a web app is three-tier even if connecting a database directly from JSP or Servlet as the client browser will be the third tier. So the three-tier system is browser-web container-database.
Jeanne Boyarsky
author & internet detective

Joined: May 26, 2003
Posts: 32077

Welcome to CodeRanch!

A web app is considered three tiers. A good way to remember this is to contrast it with a two tier client/server system. In the two tier model, the client is "thick" and contains business logic.

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