Link : https://developer.amazon.com/docs/alexa-voice-service/badging-requirements.html
Alexa Built-in Trademark Usage Guidelines --- > This is linked to WWA instead of ABI.
Expected link : https://developer.amazon.com/support/legal/alexa_built_in_trademark_usage_guidelines
Actual snippet from the link is below:
Alexa Voice Service (AVS) developers and device manufacturers must meet the guidelines below to be eligible to use the Alexa Built-in (ABI) badge. To maintain eligibility for the ABI badge for your products, you must at all times comply with these program guidelines, the Alexa Built-in Trademark Usage Guidelines, and the Marketing and Branding Guidelines, which may be updated from time to time