While it is not necessary, it is highly recommended. When we design and build a website, we are the ones who have a full overview of the project, the plugins used and the way things are built. This gives us the right information to make sure your site is optimized for the hosting environment we provide, and it is much easier for us to fix any problems that may arise.
However, we do offer 30 days of free service after launch to make sure things are running smoothly and to polish things up if necessary. After this time, if you want us to look after your site on an ongoing basis, you will need to purchase one of our hosting and management plans.