What can developers use to enhance their applications with machine learning capabilities?

Developers can use Azure Cognitive Services to enhance their applications with machine learning capabilities. Azure Cognitive Services is a suite of pre-built APIs and services that allow developers to integrate advanced artificial intelligence features into their applications without needing extensive knowledge in data science or machine learning. These services include functionalities for computer vision, natural language processing, speech recognition, and more, enabling developers to build intelligent applications that can understand and interact with human language, analyze images and videos, and detect anomalies in data.

The other options, while valuable for different purposes, do not directly provide machine learning capabilities in the same way. Azure Blob Storage is primarily used for storing large amounts of unstructured data, such as images and documents. Azure SQL Database is a relational database service that provides SQL features for data storage and retrieval but does not inherently include machine learning functionalities. Azure DevOps is focused on continuous integration and deployment, project management, and collaboration in software development rather than incorporating machine learning features directly into applications. Thus, Azure Cognitive Services stands out as the dedicated solution for adding machine learning capabilities.