CapitalD is an SEO and Web Hosting provider in Brisbane, Australia.

Search engine optimization (SEO) is the process of affecting the visibility of a website or a web page in a search engine‘s unpaid results … As an Internet marketing strategy, SEO considers how search engines work, what people search for, the actual search terms or keywords typed into search engines and which search engines are preferred by their targeted audience. Optimizing a website may involve editing its content, HTML and associated coding to both increase its relevance to specific keywords and to remove barriers to the indexing activities of search engines.
Source: https://en.wikipedia.org/wiki/Search_engine_optimization