TLD is short for Top-Level Domain. Top-Level Domain is the last part of a domain name. TLD is a key element of your website address and is one of the key faqctors in shaping the image and boosting the popularity of your online presence. An example is if your website serves as an e-shop or a web profile of your company, then your TLD is expected to be .COM or .BIZ. If your e-store is targeted exclusively at the UK market, then you will be better off choosing a .CO.UK top-level domain.