BigCommerce is a bit different from our other hosting plans in that it's a SaaS (software-as-a-service) provider instead of an IaaS (infrastructure-as-a-service) provider. In other words, rather than renting space on a virtual machine where you setup and configure your own site, BigCommerce provides you with an app you login to that creates and online store.
For plans or packages featuring unlimited websites, domains, or email accounts, we do not enforce any official limitations. Customers are able to utilize as many of these features as they wish. That said, these are of course not infinite resources and there are inherent maximums associated with the technology powering them. For example, while email account creation is unlimited, these rely on the file storage available on the account. Therefore customers need to be operating within the Terms of Service to ensure resources are available to fully enable email functionality. Customers operating within the Terms of Service have yet to come up against technical boundaries for email, domains, or websites.
A domain must be unique (for example there can only be one single Yahoo.com) and must be registered with a domain registrar (ie. NameCheap); while for sub domains, users can freely add it on top of the existing domain as long as their web host provide the service. Some would say sub-domains are the ‘third level’ domains in the sense that they are simply “sub folders” under the domain root directory, normally used to organize your website content in different languages or different categories.
For example, only organizations can register a “.org” domain name, and only American citizens can register a domain name that ends in “.us.” Failing to meet the guidelines and requirements for each type of domain during the actual registration and payment process will result in the domain name being “released” back into the pool of available domain names; the customer will have to pick a top level domain for which they actually qualify, or cancel their purchase altogether.
Beyond that, Dreamhost is a 5-of-5 hosting company for many reasons. They operate their own control panel, which is convenient and easy to understand. While phone support isn't available 24-7, they are responsive to chat and tickets. The company uses superfast SSDs for all their storage, has a free SSL certificate (for more secured web browsing), and provides SSH access for those plans that are intended for more technical users.