# About Google Tag Manager

**Source**: https://developers.google.com/tag-platform/tag-manager
**Extracted**: 2025-01-09

Google Tag Manager is a tag management system that lets you configure and deploy tags on your website or mobile app, from an easy-to-use web interface. You can use Tag Manager to optimize your tag deployment, troubleshoot configuration errors, and modify tags that are already deployed.

## Why Use Google Tag Manager

Here are some reasons to use Tag Manager:

- Support for tag organization.
- Version control.
- Support for multiple tag types, including the Google tag.
- Community-developed tag templates.
- Enterprise collaboration.
- Security features.

## Deploy for Web Pages

Use Tag Manager to manage tags (such as measurement and marketing optimization JavaScript tags) on your site. Without editing your site code, use Tag Manager to add and update Google Ads, Google Analytics, Floodlight, and third-party tags.

**Related:** [Get started for websites](https://developers.google.com/tag-platform/tag-manager/web)

## Deploy for Mobile Apps

Use Google Tag Manager to manage analytics and advertising tools in your apps without having to rebuild and resubmit the applications' binaries to app marketplaces.

**Related:**
- [Get started for Android](https://developers.google.com/tag-platform/tag-manager/android/v5)
- [Get started for iOS](https://developers.google.com/tag-platform/tag-manager/ios/v5)

## Server-Side Tagging

Server-Side Tagging allows you to move tag code off of your website or app and into the Cloud. Server-Side Tagging can help you improve the performance and security of your website or mobile app while serving all dependent assets from your own domain.

**Related:** [Get started with Server-Side Tagging](https://developers.google.com/tag-platform/tag-manager/server-side)

## Create Custom Templates

Build your own tag and variable templates in Tag Manager. Submit templates to the Community Template Gallery and make them available worldwide.

**Related:**
- [Quick start guide](https://developers.google.com/tag-platform/tag-manager/templates)
- [Submit templates to the Community Template Gallery](https://developers.google.com/tag-platform/tag-manager/templates/gallery)

## Automate Configuration with the REST API

The Google Tag Manager API provides access to Tag Manager configuration data for an authorized user. Use the API to manage accounts, containers and container versions, tags, rules, triggers, variables, and user permissions.

**Related:** [Get started with the REST API](https://developers.google.com/tag-platform/tag-manager/api/v2/devguide)

## Additional Resources

For more information about Tag Manager features and benefits, visit the following resources:

- [Product site](https://marketingplatform.google.com/about/tag-manager/)
- [Help center](https://support.google.com/tagmanager/)
- [Help community](https://support.google.com/tagmanager/community)