The short answer is that your business is great at what you do and zo agency is great at what we do! A full service web development agency builds websites on a daily business, stays on top of the latest features, developments, tools and upgrades and builds websites fast. For many reasons it is a good idea to get a professional web development company to build and service your website, unless you were once a web developer yourself. When you hire a web development company you will likely be offered a number of website packages with different numbers of pages, a set number of features and pages and other parameters with a fixed price. Custom packages will likely be more expensive but may be necessary to best fit your business needs for a website.