A company is developing a new machine learning model solution in AWS. The models are developed as independent microservices that fetch about 1 GB of model data ...

A company is developing a new machine learning model solution in AWS. The models are developed as independent microservices that fetch about 1 GB of model data from Amazon S3 at startup and load the data into memory. Users access the models through an asynchronous API. Users can send a request or a batch of requests and specify where the results should be sent.
The company provides models to hundreds of users. The usage patterns for the models are irregular Some models could be unused for days or weeks. Other models could receive batches of thousands of requests at a time.
Which solution meets these requirements?