One of our clients requested to integrate AppNexus ads with their Drupal 8 site. The requirements were very simple:

• Ability to display ads as blocks.
• Ad blocks should be configurable: tagId, Sizes. And pass those variables via apntag.defineTag().
• Ability to pass global page options via apntag.setPageOpts().

Since there wasn't any module that would support this I decided to create a module that will be very easy to use and at the same time will be extendable and useful in other projects.

The module comes with a simple PHP class that helps to generate pageOpts from hook_page_attachments(). You may create your own class using that class as an example.