"How do these technologies relate to Web 2?" asked one of my customers last week as we studied Apache httpd and Apache Tomcat. And of course that's followed up by the need to answer the question "What is Web 2".

Initial web sites - "Web 1" if you like - were discreet information sources provided by a web site owner, with connectivity to other resources made via the web site visitor's browser. In other words, each web site had:
* Information supplied by a single provider
* Isolated from other sites in terms of data provision
* Typically, a series of non-interactive pages.

Moving on to "Web 2", we have:
* Information supplied by multiple providers - blogs, forums, message boards, wikis, etc ("social software")
* Data provision across between sites - such as Google ads, RSS feeds and others
* Interactive and tailored pages to meet individual requirements.

The technologies are very much the established ones that are served by Apache httpd and Apache Tomcat anyway (and Web 2 means different things to different people!) so the answer to my initial questioner is really "You're already looking at Web 2". Well - you certainly are on our sites; not all of the web 2 technologies, of course; we have no incoming RSS feeds, Google Ads, SOAP or AJAX. But we do have social software, data provision from sites such as the European Central Bank, and interactive pages that will tailor the site to make it work better for what YOU require and for US to maintain.

Here are some old fashioned links: O'Reilly - the originators of the term "Web 2" and Wikipedia on Web 2. Oh - wait - even those aren't QUITE so old fashioned, are they? Wikipedia is very much Web 2 ;-)

Update - September 2008 - I have added a simple Ajax Example here, and Ajax is now covered on our PHP Techniques Workshop
(written 2007-05-21, updated 2008-09-27)

 W501 - Introduction to Web Site Structure
  [332] Looking up IP addresses - (2005-06-01)
  [528] Getting favicon to work - avoiding common pitfalls - (2005-12-14)
  [1024] Web site - a refresh to improve navigation - (2007-01-07)
  [1031] robots.txt - a clue to hidden pages? - (2007-01-13)
  [1168] Moving out some of the web site bloat - (2007-04-29)
  [1176] A pu that got me into trouble - (2007-05-04)
  [1431] Getting the community on line - some basics - (2007-11-13)
  [1636] What to do if the Home Page is missing - (2008-05-08)
  [1686] FTP - how not to corrupt data (binary v ascii) - (2008-06-24)
  [1969] Search Engines. Getting the right pages seen. - (2009-01-01)
  [2094] If you have a spelling mistake in your URL / page name - (2009-03-21)
  [2214] Global Index to help you find resources - (2009-06-01)
  [2282] Checking robots.txt from Python - (2009-07-12)
  [2552] Web site traffic - real users, or just noise? - (2009-12-26)

P221 - Perl on the Web
  [433] FTP - how to make the right transfers - (2005-09-01)
  [493] Running a Perl script within a PHP page - (2005-11-12)
  [590] Danny and Donna are getting married - (2006-02-03)
  [641] Simple but rugged form handling demo - (2006-03-10)
  [662] An unhelpful error message from Apache httpd - (2006-03-30)
  [687] Presentation, Business and Persistence layers in Perl and PHP - (2006-04-17)
  [975] Answering ALL the delegate's Perl questions - (2006-12-09)
  [2551] Perl and the Common Gateway Interface - out of fashion but still very useful? - (2009-12-26)
  [3875] Using CGI and Perl to put a simple application online. Sometimes still the best way. - (2012-09-30)

H101 - Introduction to PHP
  [48] PHP - onwards and upwards - (2004-09-14)
  [55] Evening classes to learn PHP - (2004-09-19)
  [93] Case Sensitive? - (2004-10-19)
  [124] PHP v Java - (2004-11-20)
  [132] Portrait of the author - (2004-11-27)
  [135] Too many Perls - (2004-11-30)
  [317] Programming languages - a comparison - (2005-05-20)
  [341] Happy Birthday, PHP - (2005-06-09)
  [380] Bridging to the customer requirement - (2005-07-16)
  [382] Central London Courses - Perl, PHP, Python, Tcl, MySQL - (2005-07-18)
  [577] Learning to program in Perl or PHP - (2006-01-26)
  [624] It's REALLY easy to add a little PHP - (2006-02-26)
  [629] Choosing the right language - (2006-03-01)
  [646] PHP - London course, Melksham Course, Evening course - (2006-03-14)
  [691] Testing you Perl / PHP / MySQL / Tcl knowledge - (2006-04-19)
  [712] Why reinvent the wheel - (2006-05-06)
  [789] Hot answers in PHP - (2006-07-02)
  [795] Remember a site's non-technical issues too - (2006-07-07)
  [846] Is Perl being replaced by PHP and Python? - (2006-08-27)
  [917] Syntax checking in PHP - (2006-11-07)
  [924] The LAMP Cookbook - Linux, Apache, MySQL, PHP / Perl - (2006-11-13)
  [949] Sludge off the mountain, and Python and PHP - (2006-11-27)
  [1050] The HTML++ Metalanguage - (2007-01-22)
  [1717] Q - Should I use Perl or Python? - (2008-07-23)
  [1753] Perl v PHP, choosing the right language - (2008-08-14)
  [1958] PHP - Parse error: syntax error, unexpected $end ... - (2008-12-23)
  [2097] PHP Course - for hobby / club / charity users. - (2009-03-22)
  [3025] Learning to Program ... in PHP. Course examples. - (2010-11-01)
  [4118] We not only teach PHP and Python - we teach good PHP and Python Practice! - (2013-06-18)
  [4621] The power of scripting - (2016-01-12)

G902 - Well House Consultants - Web site techniques, utility and visibility
  [23] Skills and responsibilities - (2004-08-22)
  [32] Web design platoon - (2004-08-29)
  [98] No more 'Error 404' pages. Something better. - (2004-10-24)
  [109] URLs - a service and not a hurdle - (2004-11-04)
  [117] A case of case - (2004-11-14)
  [142] Colour for access - (2004-12-06)
  [165] Implementing an effective site search engine - (2005-01-01)
  [173] Data Mining - (2005-01-09)
  [179] The hunt for unique words - (2005-01-16)
  [182] Your personal Google ranking - (2005-01-19)
  [197] Allow for peak traffic on your web site - (2005-02-01)
  [202] Searching for numbers - (2005-02-04)
  [222] Who are all these visitors? - (2005-02-20)
  [259] Responding to spam - (2005-03-27)
  [261] Putting a form online - (2005-03-29)
  [268] Information request forms, cleaning up spam - (2005-04-05)
  [274] Our most popular resources - (2005-04-10)
  [276] An apology to Mr Boneparte - (2005-04-11)
  [278] Cover all the options - (2005-04-13)
  [284] The Iconish language - (2005-04-19)
  [288] Colour blindness for web developers - (2005-04-22)
  [311] Growth pains - (2005-05-14)
  [314] What language is this written in? - (2005-05-17)
  [320] Ordnance Survey - using a 'Get a map' - (2005-05-22)
  [322] More maps - (2005-05-23)
  [347] Frightening and from-friend viruses and spams - (2005-06-14)
  [348] Graveyard pages - (2005-06-15)
  [369] CMS - the minefield of Choices - (2005-07-05)
  [376] What brings people to my web site? - (2005-07-13)
  [414] Form Madness - (2005-08-14)
  [492] New Navigation Aid - Launch of My Wellho - (2005-11-11)
  [510] Dynamic Web presence - next generation web site - (2005-11-29)
  [533] Bigger Box Campaign - (2005-12-18)
  [649] Denial of Service ''attack'' - (2006-03-17)
  [658] Keeping the visitors happy and browsing - (2006-03-26)
  [681] Mirroring a dynamic site - (2006-04-12)
  [718] Protecting images from theft - (2006-05-12)
  [732] Where is a web site visitor browsing from - (2006-05-24)
  [757] Horse and Python training - (2006-06-12)
  [767] Finding the language preference of a web site visitor - (2006-06-18)
  [800] Effective web campaign? - (2006-07-12)
  [893] Visibility - (2006-10-14)
  [916] Driving customers away - (2006-11-07)
  [976] Santa at the station - (2006-12-09)
  [994] Training on Cascading Style Sheets - (2006-12-17)
  [1015] Search engine placement - long term strategy and success - (2006-12-30)
  [1029] Our search engine placement is dropping. - (2007-01-11)
  [1055] Above the fold - (2007-01-28)
  [1104] Drawing dynamic graphs in PHP - (2007-03-09)
  [1177] Sorting out for a site map - (2007-05-05)
  [1184] Finding resources - some pointers - (2007-05-13)
  [1186] Two new pages / sites - (2007-05-14)
  [1207] Simple but effective use of mod_rewrite (Apache httpd) - (2007-05-27)
  [1212] What brought YOU to our web site? - (2007-06-01)
  [1237] What proportion of our web traffic is robots? - (2007-06-19)
  [1297] Stuffing content into a web page - easy maintainance - (2007-08-09)
  [1437] Above the fold with First Great Western - (2007-11-19)
  [1494] A time to update pictures - (2008-01-03)
  [1505] Script to present commonly used images - PHP - (2008-01-13)
  [1506] Ongoing Image Copyright Issues, PHP and MySQL solutions - (2008-01-14)
  [1513] Perl, PHP or Python? No - Perl AND PHP AND Python! - (2008-01-20)
  [1534] Where in the world / country is my visitor from? - (2008-02-07)
  [1541] Colour, Composition or Content - (2008-02-16)
  [1554] Online hotel reservations - Melksham, Wiltshire (near Bath) - (2008-02-24)
  [1610] PHP course dot co, dot uk - (2008-04-13)
  [1630] To provide external links, or not? - (2008-05-04)
  [1634] Kiss and Book - (2008-05-07)
  [1653] How do Google Ads work? - (2008-05-25)
  [1711] Rapid growth leads to server move - (2008-07-17)
  [1747] Who is watching you? - (2008-08-10)
  [1756] Ever had One of THOSE mornings? - (2008-08-16)
  [1793] Which country does a search engine think you are located in? - (2008-09-11)
  [1797] I have been working hard but I do not expect you noticed - (2008-09-14)
  [1833] Web Bloopers - good form design - avoiding pitfalls - (2008-10-11)
  [1856] A few of my favourite things - (2008-10-26)
  [1888] Find the link - (2008-11-16)
  [1955] How to avoid duplicating web page maintainance - (2008-12-20)
  [1961] Making our things easier to find - (2008-12-26)
  [1970] Plagarism - who is copying my pages? - (2009-01-02)
  [1982] Cooking bodies and URLs - (2009-01-08)
  [2056] Web Site Loading - experiences and some solutions shared - (2009-02-26)
  [2065] Static mirroring through HTTrack, wget and others - (2009-03-03)
  [2225] How important is a front page ranking on a search engine? - (2009-06-09)
  [2332] Formation, des langages Open Source - (2009-08-09)
  [2333] Formaci[83][c2]ón, de los lenguajes de c[83][c2]ódigo abierto - (2009-08-09)
  [2334] Formazione, Open Source computer lingue - (2009-08-09)
  [2335] Ausbildung, die Open-Source-Sprachen - (2009-08-09)
  [2336] Forma[83][c2]ç[83][c2]ão, Open Source computador l[83][c2]ínguas - (2009-08-09)
  [2337] Opleiding, Open Source computertalen - (2009-08-09)
  [2338] Uddannelse, Open Source computer sprog - (2009-08-09)
  [2339] Oppl[83][c2]æring, Open Source datamaskinen spr[83][c2]åk - (2009-08-09)
  [2340] ldning, Open Source dator spr[83][c2]åk - (2009-08-09)
  [2341] Koulutus, Open Source tietokone kielill[83][c2]ä - (2009-08-09)
  [2389] Writing with our customers words - (2009-09-01)
  [2410] Removal of technical resources from this site - (2009-09-19)
  [2519] Status Page / breaks of service in early December - (2009-11-30)
  [2532] Analysing Google arrivals by country of origin - (2009-12-10)
  [2569] How to run a successful online poll / petition / survey / consultation - (2010-01-10)
  [2668] Is it worth it? - (2010-03-09)
  [2981] How to set up short and meaningfull alternative URLs - (2010-10-02)
  [3022] Retaining web site visitors - reducing the one page wonders - (2010-10-31)
  [3087] Making the most of critical emails - reading behind the scene - (2010-12-16)
  [3149] Looking back at www.wellho.net - (2011-01-28)
  [3197] Finding and diverting image requests from rogue domains - (2011-03-08)
  [3367] Google +1 - what is it? - (2011-07-22)
  [3426] Automed web site testing scripted in Ruby using watir-webdriver - (2011-09-09)
  [3491] Who is knocking at your web site door? Are you well set up to deal with allcomers? - (2011-10-21)
  [3532] Sharing the user experience - designing a form with the customer in mind - (2011-11-29)
  [3554] Learning more about our web site - and learning how to learn about yours - (2011-12-17)
  [3563] How big is a web page these days? Does the size of your pages matter? - (2011-12-26)
  [3589] Promoting a single one of your domains on the search engines - (2012-01-22)
  [3623] Some TestWise examples - helping use Ruby code to check your web site operation - (2012-02-24)
  [3734] QR codes with marketing logos embedded - (2012-05-16)
  [3744] Short Web Addresses for Melksham - (2012-05-30)
  [3745] Legal change - You need to obtain user consent if you use cookies on your website - (2012-06-01)
  [3776] Some traps it's so easy to fall into in designing your web site - (2012-06-23)
  [3896] An email marathon - (2012-10-15)
  [3974] TV show appearance - how does it effect your web site? - (2013-01-13)
  [4001] Helping search engines with appropriate 400 error codes - (2013-02-11)
  [4076] Web site - fully back! - (2013-04-29)
  [4115] More or less back - what happened to our server the other day - (2013-06-14)
  [4136] How do I post automatically from a PHP script to my Twitter account? - (2013-07-10)
  [4239] Facebook marketing - early experiences - (2014-01-19)
  [4376] Well House Consultants, Well House Manor, First Great Western Coffee shop, TransWilts / 2014 web site reports - (2015-01-01)
  [4401] Selecting RECENT and POPULAR news and trends for your web site users - (2015-01-19)
  [4474] Effect on external factors on traffic to our web sites - an update - (2015-04-26)
  [4492] Almost so wrong, but perhaps it's right for some? - (2015-05-11)

A211 - Web Application Design and Deployment
  [356] Sudoku helper or sudoku cheat - (2005-06-23)
  [443] Server side scripting of styles to suit the browser - (2005-09-12)
  [659] Web Application Components - (2006-03-28)
  [1256] What country are you in? How we find out on our web site - (2007-07-03)
  [1351] Compressing web pages sent out from server. Is it worth it? - (2007-09-14)
  [1545] Letting new visitors know we provide training courses - (2008-02-19)
  [1547] New bathing idea for hotels from Hotelympia - (2008-02-20)
  [1798] What does an browser understand? What does an HTML document contain? - (2008-09-15)
  [2072] Copyright, Portability and other nontechnical web site issues - (2009-03-09)

A100 - Web Application Deployment - The Components of a Web-Based Solution
  [34] Linux / LAMP course - (2004-08-31)
  [49] Business is the predominant user of Tomcat, Perl and Tcl - (2004-09-15)
  [166] Acronyms - (2005-01-02)
  [367] Ajax - (2005-07-03)
  [442] How far away is that server? - (2005-09-10)
  [673] Helicopter views and tartans - (2006-04-06)
  [1265] Apache, Tomcat, Jakarta, httpd, web server - what are they? - (2007-07-13)
  [1496] PHP / Web 2 logging - (2008-01-06)
  [2099] Should I maintain the programming code on my own website? - (2009-03-23)
  [2896] LAMP - Linux, Apache, MySQL, PHP - install, configure, administer - (2010-07-30)
  [3891] The components of an Apache httpd / Tomcat / MySQL stack and what each does - (2012-10-13)

Back to Back off home with our best wishes

Previous and next or Horse's mouth home

Forward to Testing for one of a list of values.

Returning multiple values from a function (Perl, PHP, Python)
No switch in Python
Training information - England, Scotland, Wales and Ireland
Testing for one of a list of values.
From Web to Web 2
Back off home with our best wishes
The last tree to leaf
Regular Express Primer
Drawing hands on a clock face - PHP
Dangerous Dogs and Hotel Marketing