AWS Lambda on Java 8 for Alexa Skill. Basic example - YouTube
Creando una Alexa Skill de audio en cuestión de minutos (Java/Kotlin edition)
Desarrollando AWS Alexa Skills con Java
Tu primer skill alexa con Java
Create simple Amazon Alexa Skill with backend on Java | by Sergey Smolnikov | Voice Tech Podcast | Medium
GitHub - alexa/alexa-skills-kit-sdk-for-java: The Alexa Skills Kit SDK for Java helps you get a skill up and running quickly, letting you focus on skill logic instead of boilerplate code.