So what exactly do we mean by "Web Application Development"? Well, really that's just a posh word for a website that does something more than just sit there and look pretty, something that works for you and your business, rather than you working for it!

Examples of types Web Application are:

• Intranets
• Content Management Systems (allowing you to manage your website data completely online)
• Online databases
• Blogs

Some of the most high-profile examples of web applications are Google Mail, Google itself, and Youtube. See this Wikipedia article for a discussion about web applications.