The Enterprise Meets the Internet

Data-center computing

Business Data

Tier 3

Tier 2

Tier 1

Tier 0?

Business Logic

Presentation Logic

Public Access Logic

Universal Clients

Enterprise Middleware

“Intra” - Enterprise Access

“Inter” - Partner Access

“Extra” - Public Access

CGI, Forms, DB Access tools, etc..

HTML, Java, PK

Internet Services

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