You work as a machine learning specialist for a home maintenance automation company that produces robots to vacuum the floor, mow the lawn, and other automated worker tools. You have built and trained your model (starting from a pre-trained model from ImageNet) using the SageMaker built-in Object Detection algorithm. The robots use the Object Detection algorithm to detect objects that are obstacles or boundaries in their work area. You now need to have the robots run in real home settings using your model. You also want your robots to communicate with each other if there is more than one robot in the operating area.
Which set of Amazon services will give you the most cost-effective solution?

Answer options:

A.Amazon Elastic Inference and AWS IoT Greengrass
B.AWS RoboMaker and Amazon Sumerian
C.Amazon Rekognition and AWS IoT Greengrass
D.Amazon Rekognition and Amazon Sumerian

Answer: A
Option A is correct. Amazon Elastic Inference gives you the inference processing (CPU, GPU, etc.) you need to process your obstacle and boundary observations. AWS IoT Greengrass gives you the capability to run inference on your robot devices and communicate with other IoT devices.
Option B is incorrect. Amazon Sumerian is used for augmented reality, which is not needed to solve your machine learning scenarios.
Option C is incorrect. Amazon Rekognition is used for image and video analysis. It would identify objects in your domain. But it wouldn’t contribute to lowering the cost of your inference implementation.
Option D is incorrect. Amazon Rekognition is used for image and video analysis. It would identify objects in your domain. But it wouldn’t contribute to lowering the cost of your inference implementation. Also, Amazon Sumerian is used for augmented reality, which is not needed to solve your machine learning scenarios.
Reference:
Please see the Amazon SageMaker Overview, particularly the Deploy and manage models in the production section, the Amazon Elastic Inference Overview, the AWS News blog titled Amazon Elastic Inference – GPU-Powered Deep Learning Inference Acceleration, the Amazon SageMaker developer guide titled Object Detection Algorithm, the AWS IoT Greengrass Overview, the Amazon Sumerian Overview, and the Amazon Rekognition Overview.