Cloaking
Showing search crawlers different content from users to manipulate results. Not all legitimate personalisation is cloaking; purpose and implementation matter.
Definition and sourcesKNOWLEDGE / FROM A TO Z
Glossary
Technology, explained clearly. Find a term, choose a letter or narrow the topic. Definitions include sources and their review date.
Terms 685 / 685
Cloud computing
A model for on-demand access to shared computing resources. Cloud changes infrastructure delivery but does not automatically transfer all application responsibility.
Definition and sourcesCloudflare
A network-services provider offering CDN, DNS, application protection and the Workers computing platform. Services operate differently. Enabling Cloudflare does not replace application updates or correct access configuration.
Definition and sourcesCluster
Cooperating nodes performing a shared task. A cluster can support scaling or availability but does not guarantee resilience to every failure.
Definition and sourcesCMS (Content Management System)
Software for editing and publishing content through an administration interface. It can manage websites, blogs or other material. Some changes still require developers; a CMS does not imply unlimited editing without code.
Definition and sourcesCodeIgniter
A PHP framework for web applications. It provides routing and data tools; compatibility depends on the specific framework version.
Definition and sourcesCommand-line interface
An interface operated through text commands. It supports automation and scripting; command effects depend on the tool, arguments and user permissions.
Definition and sourcesCompilation
Transforming code into another representation, often executable or intermediate. It can occur ahead of time or during execution; success does not prove correctness.
Definition and sourcesComponent
A system part with defined responsibility and interface. In UI it may combine presentation and behaviour; useful boundaries support reuse and testing.
Definition and sourcesConcrete CMS
The former name of Concrete CMS, a content system with in-context page editing. Older installations need compatibility and update-support assessment.
Definition and sourcesConsumer-to-consumer
A transaction model between private individuals, often mediated by a platform. Platform responsibilities, fees and liability depend on the particular service.
Definition and sourcesContao
A PHP CMS using Symfony components. It manages website content and structure; extensions have their own requirements and support lifecycles.
Definition and sourcesContent marketing
Planned creation and distribution of content addressing audience needs. It supports relationships and decisions rather than merely increasing publication volume.
Definition and sourcesConversion
An event defined as a desired outcome, such as a sale or valuable enquiry. Definitions and counting rules should match business goals rather than clicks alone.
Definition and sourcesCookies
Small pieces of data stored by a browser for a website, used for sessions, preferences, analytics or advertising. Cookies are not programs. Consent requirements depend on purpose and applicable rules.
Definition and sourcesCoppermine Photo Gallery
A PHP application for publishing and managing photo galleries. Existing installations need checks of version, environment requirements and security updates.
Definition and sourcesCopywriting
Writing that supports a communication goal, such as explaining an offer or encouraging contact. Effective copy connects the reader's needs with concrete information. Persuasion does not justify unsupported promises.
Definition and sourcesCore Web Vitals
Core user-experience metrics: LCP, INP and CLS. Field data describes real visits, while laboratory measurements support diagnosis and comparisons.
Definition and sourcesCost per acquisition
The cost of a defined conversion: campaign spend divided by those events. First establish what conversion means in the particular report.
Definition and sourcesCost per click
The cost of an ad click. Average CPC divides click spending by clicks; low CPC does not necessarily mean a profitable campaign.
Definition and sourcesCost per lead
The cost of obtaining a contact meeting the defined lead criteria. It is calculated against campaign spending; lead quality needs separate assessment.
Definition and sourcesCost per thousand impressions
The cost of one thousand ad impressions. An impression does not equal attention or a visit; viewability and campaign outcomes also matter.
Definition and sourcesCost per view
The cost of a qualifying video-ad view or related interaction, depending on format. Check the platform's definition of a view.
Definition and sourcesCrocoblock
A family of WordPress JetPlugins for features such as dynamic content, filtering and forms. Supported editors depend on the product and version. The complete set does not necessarily behave identically across all builders.
Definition and sources