What is Google Tag Manager primarily used for?

Google Tag Manager is primarily used as a tool that facilitates the easy addition and management of snippets of code, also known as tags, on your website without requiring direct changes to the website’s source code. This means that marketers, analysts, and other non-technical users can implement and update tracking codes for analytics, marketing tools, and other third-party services seamlessly. Using a web-based interface, tags can be created, edited, and published, enabling rapid changes without the dependency on web development resources, making it a powerful solution for effective data collection and marketing optimization.

In the context of the other options, the first choice refers to a customer service function, which does not align with the primary purpose of Google Tag Manager. The second choice implies tagging visitors directly, which oversimplifies the tool's comprehensive capabilities regarding code management and tracking implementations. The third choice, while related to coding snippets, fails to highlight the central ease of use and management aspect that Google Tag Manager provides, making it less accurate in describing the tool's primary function.