# Core Components of Amazon SageMaker Ground Truth Plus


The following terms are key to understanding the capabilities of SageMaker Ground Truth Plus:
+ **Project**: Each qualified engagement with an Amazon expert results in a SageMaker Ground Truth Plus project. A project can be in the pilot or production stage.
+ **Batch**: A batch is a collection of similar recurring data objects such as images, video frames and text to be labeled. A project can have multiple batches.
+ **Metrics**: Metrics are data about your SageMaker Ground Truth Plus project for a specific date or over a date range.
+ **Task type**: SageMaker Ground Truth Plus supports five task types for data labeling. You can also have a custom task type. These include text, image, video, audio, and 3D point cloud.
+ **Data objects**: Individual items that are to be labeled.