Social media is absolutely not required, and in many cases isn’t even recommended. Email, in some form, is likely to be necessary, but it doesn’t have to be at the core of your marketing. There are lots of choices about how to promote your business, and when you build your own strategy on a solid framework, you get to be in charge of where you spend your time. That said, In the Incubator, we will assume that you are transacting business using online tools (like sales pages and payment engines, invoicing and tracking sales) and that you will have a website or other online location where you offer your work. Even if you create a physical deliverable, the structure of your business will be built with online tools.