The document provides an overview of various cognitive services offered by IBM Watson Developer Cloud including AlchemyLanguage, Concept Expansion, Concept Insights, Dialog, Document Conversion, Language Translation, Natural Language Classifier, Personality Insights, Relationship Extraction, Retrieve and Rank, Speech to Text, Text to Speech, AlchemyVision, Visual Insights, Visual Recognition, AlchemyData News, and Tradeoff Analytics. It describes the purpose and capabilities of each service and includes demos and code samples for some of the services. Resources for developers are also listed at the end.