Content Management System (CMS)
Short definition
A content management system is software that lets you add, edit and publish a website's text, images and pages without writing code.
A user adds a new page, edits existing text or uploads an image through an interface; the system stores this in a database and reflects it on the site. WordPress is a familiar example, though classic CMS platforms manage a page's content and its presentation together.
You meet it on content that is updated regularly, such as a blog, product catalogue or corporate page; the marketing team can change text without needing a developer.
It is often confused with a headless CMS. A classic CMS serves content bundled with its own template, whereas a headless CMS only stores content and distributes it to different sites and apps through an API.
The most common mistake is leaving the CMS and its plugins unupdated after installation; older versions stay exposed to publicly known security flaws, which makes the site an easy target for attackers. The correct approach is to update the core software and every plugin regularly, and to remove any plugin the site no longer actually uses.
Why it matters
Waiting on a developer for every text change costs time and money. A CMS lets the marketing and content team update the site themselves day to day, which makes staying current cheaper.
Illustrative example
An event equipment hire business adds a new product and its price through the CMS panel in a few minutes, with no developer needed.
