Yes. Having your domain name will add real credibility and help build your brand, making it stand out better in an increasingly competitive marketplace.
I already have a Domain Name.  No worries, we just need access to your account to do all the geeky things we need to do.
I need to register one. That's OK, we can recommend a reputable company to register your Domain Name.
Tip: Your domain needs to represent or be similar to your business name. So when deciding on a business name check the availability of your domain name (or vice-versa).