Tag management system

A tag management system was designed to help manage the lifecycle of e-marketing tags (sometimes referred to as "tracking pixels" or "web beacons"), which are used to integrate third-party software into digital properties such as websites and web applications. However, as tag management systems have grown in sophistication they've developed as powerful tools to create rich data in the space between user, their browser and the property. This data can be fed to marketing tools or even used to make dynamic changes to the website or application itself.
Functionality.
E-marketing tags are used to add functionality to web sites, video content, and mobile apps. Such functionality can include web analytics, campaign analytics, audience measurement, personalization, A/B testing, ad servers, behavioral retargeting, and conversion tracking.
The main advantages of a tag management system is that it allows non-developer types to action a multitude of different tasks on a website or application whilst improving performance by reducing written code. It does this by replacing a multitude of tags - historically managed by a developer - with a single "container tag" which sits across all areas of the property. The tag management system is then accessed separately (normally via a website) to prioritize and "fire" individual tags as appropriate based on business rules, navigation events and known data. Typical functionality includes testing environment (sandboxing), audit trail and version control, ability to A/B test different solutions, tag deduplication, and role-based access to data.
Benefits.
Typically cited benefits of tag management systems include: