It's been great for using as 'glue' to do small tasks like clean ups in our case or other short lived minor tasks. I haven't used it for anything major though,

It's been great for using as 'glue' to do small tasks like clean ups in our case or other short lived minor tasks. I haven't used it for anything major though, only for minor tasks that are easier or more convenient to do with Lambda rather than a different way. The real value comes from the integration with other AWS services, for example, for developers using DynamoDb Lambdas make a lot of maintenance of records far easier with streams events.