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web development

Here you go...a web
Step 4: The web server response generated just for
processes the web you. Enjoy!
request, creating a web
response, which is sent
back over the Internet
to the waiting web response.
Here comes a web
browser.
Web
Server

The Internet

The (potentially) many substeps of step 4

In practice, step 4 can involve multiple substeps, depending
on what the web server has to do to produce the response.
Obviously, if all the server has to do is locate static content
and sent it back to the browser, the substeps aren’t too
taxing, because it’s all just file I/O. That’s exactly what I
need. Thanks!
However, when dynamic content must be generated, the sub-
steps involve the web server locating the program to execute,
executing the located program, and then capturing the output
from the program as the web response…which is then sent
back to the waiting web browser.
This dynamic content generation process has been
standardized since the early days of the Web and is known
as the Common Gateway Interface (CGI). Programs
that conform to the standard are often referred to as CGI
scripts.
Step 5: The web
browser receives the
web response and
displays it on your
user’s screen.

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