Conversion optimizationThe practice of improving website elements and user experience to increase conversions and revenue.
Conversion rateThe percentage of users who complete a desired action on a website. Conversion rate optimization (CRO) is the process of improving this metric.
Cost-per-acquisition (CPA)The amount an advertiser pays for each desired action taken by a user, such as a sale or a form submission.
Cost-per-click (CPC)The amount of money paid by an advertiser each time a user clicks on an ad.
CrawlThe process by which search engine bots systematically scan the content of web pages to index them in search results.
CrawlingThe process by which search engine bots discover and retrieve web pages to be indexed and displayed in search engine results.
Crawling frequencyThe frequency with which search engine bots crawl and index a website's content. Crawling frequency can be influenced by a website's authority, content quality, and updates.
Cross-linkingThe practice of linking multiple pages or sections of a website to each other, often used to improve navigation and user experience.
CSSCascading Style Sheets, a language used to describe the presentation of HTML elements on a web page.
CTR (Click-through-rate)The percentage of users who click on a link after seeing it. CTR is an important metric for measuring the effectiveness of search engine optimization and advertising campaigns.
Customer journeyThe path a customer takes from initial awareness of a product or service to making a purchase or completing a desired action.
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Deep linkingA link that points to a specific page or piece of content within a website, rather than just the homepage. Deep linking helps search engines understand the structure and content of a website.
Deep webThe part of the internet that is not indexed by search engines, including password-protected pages and unlinked content.
DensityThe frequency of a particular word or phrase in a body of text. Density is an important factor in search engine optimization.
Directory submissionThe process of submitting a website to an online directory in order to improve visibility and backlinks.
DomainThe name and address of a website on the internet, such as "example.com".
Domain ageThe length of time a domain has been registered and active. Domain age is an important factor in search engine ranking.
Domain authorityA measure of a website's overall quality and trustworthiness based on the number and quality of its backlinks and content.
Domain name system (DNS)The system used to translate domain names into IP addresses, allowing users to access websites using easy-to-remember names instead of numerical IP addresses.
Domain squattingThe practice of registering a domain name with the intent of profiting from the sale or use of the name by another party.