Which Azure service could be used for image classification tasks?

Azure Custom Vision is specifically designed for building, training, and deploying custom image classification models. It enables users to create models that can classify images based on their content, allowing for the development of applications that require image recognition capabilities. Custom Vision simplifies the process by providing an intuitive interface where users can upload images, label them, and then train a model that learns to classify similar images in the future.

This service is particularly useful for scenarios where pre-trained AI models may not meet the specific needs of the project, as it allows for customization and fine-tuning based on unique datasets. The focus on image classification makes it the ideal service among the options provided.

Other services listed serve different purposes: Azure Cognitive Search is primarily for implementing search capabilities across various content types, Azure Data Factory focuses on data integration and transformation workflows, and Azure SQL Database is a relational database service designed for structured data storage and querying. Thus, they do not cater to image classification tasks as effectively as Azure Custom Vision.