Google Tag Manager makes it simple to handle JavaScript and HTML tags without the need for a developer — or nearly so. You will still need to have a developer put the Tag Manager code on your website. After that, you can add any services or new scripts directly from the Google Tag Manager interface.
Analytics focuses on discovering correlations and trends in data, whereas optimization focuses on cause and effect. However, combining analytics and optimization can be quite beneficial to your organization. So let's look at real-world examples of how to use analytics better to drive testing results.