Display advertising is a type of advertising that typically contains text (i.e., copy), logos, photographs or other images, location maps, and similar items. wikipedia.org

An SEO audit is an assessment to determine whether or not adjustments need to be made to a site from SEO perspective.

SEO content is any content created with the goal of attracting search engine traffic. wikipedia.org

Backlinks, also known as incoming links, inbound links, inlinks, and inward links, are incoming links to a website or web page. wikipedia.org

Search engine optimization (SEO) is the process of improving the visibility of a website or a web page in search engines via the "natural" or un-paid ("organic" or "algorithmic") search results. wikipedia.org

Social media optimization (SMO) is the use of a number of social media outlets and communities to generate publicity to increase the awareness of a product, brand or event. wikipedia.org

YouTube is a video-sharing website on which users can upload, view and share videos. wikipedia.org

Digital marketing is an umbrella term for the marketing of products or services using digital technologies, mainly on the Internet, but also including mobile phones, display advertising, and any other digital medium. wikipedia.org

Search engine marketing, (SEM), is a form of Internet marketing that seeks to promote websites by increasing their visibility in search engine result pages (SERPs) through the use of paid placement, contextual advertising, and paid inclusion. wikipedia.org