Intranet
An organisation's internal network or services for authorised users. Internal does not automatically mean secure; authentication and segmentation still 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
IP (Internet Protocol)
Protocols for addressing and forwarding packets between networks, notably IPv4 and IPv6. IP itself guarantees neither delivery nor ordering nor encryption.
Definition and sourcesIP address
A network interface address used to route IP packets. It can change or be shared; an address alone does not uniquely identify a person.
Definition and sourcesIPv4 address
A 32-bit IP address, usually written as four dot-separated numbers. Limited public IPv4 availability encourages address sharing through NAT.
Definition and sourcesIPv6 address
A 128-bit IP address written in hexadecimal. IPv6 provides a much larger address space, while still requiring firewalls and access controls.
Definition and sourcesIT (Information Technology)
Tools and activities for processing, storing and communicating information. Business IT includes applications, devices, networks and their maintenance. It extends beyond programming.
Definition and sourcesJamstack
An approach separating presentation from services through generated assets and APIs. It does not mean every site is static or needs no server.
Definition and sourcesJava
A programming language and platform based on the JVM. Java and JavaScript are separate technologies; similar names do not imply code compatibility.
Definition and sourcesJavaScript
A programming language used in browsers and server environments for events, data and application logic. JavaScript and Java are different languages. Modern engines can use just-in-time compilation.
Definition and sourcesJetpack
An Automattic product family for WordPress, including security, backups and performance tools. Scope varies by product and plan. Not every feature is free or available in every installation.
Definition and sourcesJira
Atlassian's tool for tracking work, issues and project workflows. It supports different processes but does not itself establish a team's methodology.
Definition and sourcesJoomla!
An open-source PHP CMS with extensions and access control. Templates and add-ons need version compatibility and update checks.
Definition and sourcesJPEG
A common raster-image format, usually using lossy compression. It suits photographs; repeated compression can reduce quality.
Definition and sourcesjQuery
A JavaScript library simplifying DOM operations, events and requests. New projects should compare its necessity with modern browser capabilities.
Definition and sourcesJSON
A text data-interchange format using objects, arrays and values. It is not executable code; syntactic validity does not establish semantic correctness.
Definition and sourcesJSON Web Token
A token format containing claims. Signatures protect integrity, but ordinary signed JWTs do not hide contents; verify algorithm, audience and expiry.
Definition and sourcesJSON-LD
A way to represent linked data in JSON with context defining terms. In SEO it is one format for structured-data markup.
Definition and sourcesKey performance indicator
A key measure tied to a specific objective. It needs a definition, data source and evaluation period; not every available metric is a KPI.
Definition and sourcesKey visual
A campaign's or brand communication's main visual motif, combining elements such as photography, illustration and typography. It can be adapted across formats. It is not the name of one specific advertising format.
Definition and sourcesKeylogger
Software or hardware recording keystrokes. It can expose passwords and messages; connection encryption does not protect data captured on an infected device.
Definition and sourcesKeyword
A word or phrase describing a query and content topic. Planning should consider intent and audience language, not just exact repetition.
Definition and sourcesKeyword cannibalisation
Similar pages competing for the same search need and splitting signals. Using a phrase on several pages alone does not establish a problem.
Definition and sourcesKeyword clustering
Grouping keywords by topic and intent to plan suitable pages. Similar wording is insufficient when users seek different answers.
Definition and sourcesKeyword density
A phrase's occurrence ratio relative to text length, depending on counting rules. No universal percentage guarantees rankings; meaning and usefulness matter more.
Definition and sources