INTRODUCTION

Web Technologies are the Techniques using which we can access various

resources on the Web. Web technologies related to the interface

between web servers and their clients. This information includes markup languages, programming interfaces and languages, and standards for document identification and display.

It facilitates communication, secure information sharing and collaboration on the World Wide Web .

The basic Web technologies

that are used to implement the Web

portion of Web Services :

Core Web Technologies

Tunneling

Firewalls

Some Historical Details

Start of standard groups : TCP, IP, TCP/IP, TELNET,FTP SMTP Archie GopherCore Web Technologies : Core Web Technologies enable linking

and sharing documents

CHARACTERISTICS

Web Server Eg – HTTPd (HTTP Daemon)Web Browser Eg – NCSA MosaicNetscape Communication Suite : Netscape Messenger Netscape Composer Netscape ConferenceFirewalls

WEBSITES AND MARK UP LANGUAGES

Websites :World Wide Web is a Grand global collection

of Websites and Internet interconnects all the Sites.

Hypertext Document. – HTML – HyperText Markup Language– CSS – Cascading Style Sheets– JavaScript

XML is a software and hardware independent tool for carrying information.

How the Web Works

Your computer must have

communications hardware

with installed drivers (software)

– Modem card, ex: 56k Modem

– Network or NIC card, ex: Linksys

– Wireless Network card

*

How the Web Works

Your computer must have Web browser software – AOL Online Software– Microsoft Internet Explorer – Netscape Navigator– Other web services require

mail programs (Outlook) or

File Transfer programs

(WS_FTP)

How the Web Works

Your computer must be logged into the Web

– Dialup has dialed, connected & user has logged in

OR

– DSL/Satellite/Cable modem is on and connected

WHAT LED TO WEB TECHNOLOGIES SUCCESS

Simple Architecture – HTTP,URL,HTML

Networked – value grows with data, Services, users .

Simple for Users – Text , Graphics and Links

Powerful – for people and Machines

EMERGING TECHNOLOGIES

The main revolutionary Web Technologies :

Web 2.0 Web 3.0Today's Latest web technologies : AJAX Ruby Ruby on Rails

ADVANTAGES

Web Technology have led to : Web development Evolution of web-based communities : social-networking sites, video-sharing sites, wikis, blogs. Business Revolution

CHALLENGES ENCOUNTERED USING WEB TECHNOLOGIES

Limited InteractivityLack of SkillsSecurity RisksBrowser CompatibilityLack of Web Development Tools Standardization

SUMMARY

Most Web pages remote or local are a combination of those Web technologies :– Raw content, placed inside…– HTML tags, formatted with…– CSS rules, interactivity produced by…– JavaScript scripts

Newer technologies like DHTML, XHTML, and XML are based on these– A little knowledge now can prepare you for new

technologies and help you keep up with your peers, your boss and your kids.