Hi @Mike_Z ,
We don't typically advertise how our customers are using Elasticsearch without their express permission and collaboration. You can read through the various Customer Blogs we share on Customers | Elastic Blog for some insights on how other companies are using Elasticsearch. Looks like we also share some wins on Elasticsearch customer success stories | Elastic Customers.
Sounds like you might also get some value from reading through our documentation. Check out: Welcome to Elastic Docs | Elastic