Sunday, March 18, 2018

SageMaker model deployment - 3 simple steps

AWS SageMaker is a platform designed to support full lifecycle of data science process, from data preparation, to model training, to deployment. Having clean separation yet easy pipelining between model training and deployment is one of its greatest strength.  A model can be developed using a training instances and saved as files. The deployment process can retrieve model artifacts saved in S3, and deploy a run time environment as HTTP endpoints. Finally, any application can send REST queries and get prediction results back from deployed endpoints.

While simple in concept, information regarding the practical implementation of SageMaker model deployment and prediction queries is currently lacking and scattered. It is easier to grasp in the simple 3 step process contained in a notebook.

1. create deployment model

We assume a model has been built (trained), with results saved in S3. A deployment model is defined with both model artifacts and algorithm containers.

2. configure deployment instances

Next, define the size and number of deployment instances, which will host the run time for deployment model service endpoints.

3. deploy to service endpoints

Finally, create service endpoints, wait for completion, and model deployment is finished, now ready to service prediction requests.

The complete deployment process can be visualized as follows:

The complete sample notebook can be seen here:

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