I have researched several big data solutions but found them either too costly, lead time too lengthy or too complicated.
Coach needed something to present actionable data. Not knowing whether the idea matched reality, I proposed a phase 1 release that would lead to feature enhancements that would naturally lead to something that would help more. I architected an ETL and data analytics process that would generate separate JSON formatted data, persisted to S3 for a specific user after being processed by a Pandas dataframe. Implemented using CloudWatch trigger, S3, Redis & lambdas and Amazon Aurora (MySQL).