Web services  sometimes called application services are services, usually including some combination of programming and data, but possibly including human resources as well that are made available from a business's Web server for Web users or other Web-connected programs.

2. Web services sometimes called
application services are services, usually including
some combination of programming and data, but
possibly including human resources as well that
are made available from a business's Web server
for Web users or other Web-connected programs.

3. Web Services

4. Elements of Web Server

5. Domain
A distinct subset of the
Internet with
addresses sharing a
common suffix or
under the control of a
particular organization
or individual

6. Hosting
 A web hosting service is a type of Internet hosting service that
allows individuals and organizations to make
their website accessible via the World Wide Web.
 Web hosts are companies that provide space on
a server owned or leased for use by clients, as well as
providing Internet connectivity, typically in a data center.
 Web hosts can also provide data center space and connectivity
to the Internet for other servers located in their data center

7. Virtual Private Server
A virtual private server (VPS) is a virtual machine sold
as a service by an Internet hosting service. A VPS runs
its own copy of an operating system, and customers
have super user-level access to that operating system
instance, so they can install almost any software that
runs on that OS

8. Mobile Compatibility
It means the same application can run in more than
one device, including computers, smartphones and
tablets. BlackBerry is the only vendor that supports
cross platform compatibility, and Windows is the only
environment with desktop/tablet compatibility.

9. Mobile Application
A mobile app is a computer program designed to
run on smart phones, tablets, computers and
other mobile devices.