Google has recently released their container tag system called Google Tag Manager or GMT. Users will find that using this system makes tagging and creating changes to existing website tags easier.
Websites contain tags which are portions of website code that allow users to measure traffic and visitor behavior on a site, understand the impact of online advertising and social channels, target audiences, and t test and improve a website.
Special features of this system include:
- Asynchronous tag loading—so your tags can fire faster without getting in each other’s way, and without slowing down the user-visible part of the page
- Easy-to-use tag templates, so marketers can quickly add tags with our web interface, as well as support for custom tags
- Error-prevention tools like Preview mode (so you can see proposed changes before implementing them), the Debug Console, and Version History to ensure that new tags won’t break your site
- User permissions and multi-account functionality to make it easy for large teams and agencies and clients to work together with appropriate levels of access
You may visit this link http://www.google.com for further details.