- We use Lambda along with Ansible to execute huge, distributed ML workloads which are (completely)serverless. Saves a lot of bucks, as ML needs huge boxes.

- For serverless APIs for querying the S3 which is a result of the above workload

Difficulties faced with Lambda(till now):

1. No way to do CD for Lambda functions. [Not yet using SAM]

2. Lambda launches in its own VPC. Is there a way to make AWS launch my lambda in my own VPC? [Not sure.]