The document is a white paper from Defined.ai focusing on training voice assistants to improve customer experiences. It emphasizes the increasing importance of voice technology and the need for high-quality training data to create fluent and helpful interactions. The paper covers key aspects such as speech collection, transcription, annotation, and sentiment analysis, all crucial for enabling voice assistants to accurately hear, understand, and respond to users. It highlights considerations for building effective voice assistants, including operating environment, target voices, content understanding, and interaction level. The document stresses the value of voice assistants in enhancing customer service, brand engagement, and overall customer experience. Defined.ai positions itself as a provider of quality-guaranteed training data using a combination of human intelligence and machine learning.