Answer / shekhar bijjuri

Web Server:
A Web server is a program that, using the client/server
model and the World Wide Web's Hypertext Transfer Protocol
( HTTP ), serves the files that form Web pages to Web users
(whose computers contain HTTP clients that forward their
requests). Every computer on the Internet that contains a
Web site must have a Web server program. Two leading Web
servers are Apache , the most widely-installed Web server,
and Microsoft's Internet Information Server ( IIS ). Other
Web servers include Novell's Web Server for users of its
NetWare operating system and IBM's family of Lotus Domino
servers, primarily for IBM's OS/390 and AS/400 customers.

Application server:
An application server is a server program in a computer in
a distributed network that provides the business logic for
an application program. The application server is
frequently viewed as part of a three-tier application,
consisting of a graphical user interface (GUI) server, an
application (business logic) server, and a database and
transaction server. More descriptively, it can be viewed as
dividing an application into:
A first-tier, front-end, Web browser-based graphical user
interface, usually at a personal computer or workstation
A middle-tier business logic application or set of
applications, possibly on a local area network or intranet
server
A third-tier, back-end, database and transaction server,
sometimes on a mainframe or large server

Answer / s.m.feroz ahmed

Hi,

Application Server has to be installed on server as well as
client .

Web Server is server where all company domains or sites are
registered with an ISP for browsing site globally.

SAP Application and .com site.

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