Web development is the customization, to any degree, of what your website does. Typically all websites need some level of "development". Web projects that have no straightforward solutions or are looking to have fine grained control over multiple aspects of their website's functionality will require web development services.
From the Wikipedia article on Web Development
...web development usually refers to writing markup and coding. Web development can range from developing the simplest static single page of plain text to the most complex web-based internet applications, electronic businesses, or social network services.
We develop for websites that help businesses save resources and traditional websites aimed at the general public. With that said, this page is generally intended for the more involved client looking for specific development platforms and the like.
Our web development services allow you to achieve your website's goal regardless of its obstacles. Organizations looking to bring new features to the web or offer sophisticated services online to their users will be needing web development to properly achieve their goal. Bringing new software and services to the web is our passion and we love to work with involved clients on exciting projects.
We work more efficiently, do not limit options and deliver accurate analysis's and estimates for sophisticated projects. We work with all of the major CMSs and most of the smaller ones. We also have highly specialized services for mission critical websites serving large amounts of traffic.