Free trials are most useful / valid in my opinion when the product or service is novel and your potential customers aren't sure yet if you'll solve their proble

Free trials are most useful / valid in my opinion when the product or service is novel and your potential customers aren't sure yet if you'll solve their problem. It makes perfect sense for a project management SaaS because everyone works in different ways. However, you're offering managed services which should already be well understood by your real customers. Managed Postgres is something they need or not - you're not in the business of selling them on Postgres itself. Thus I don't think offering a free trial does anything to attract a real willing customer. As an alternative you could offer free credits if you really want to test this, but this will always be a trade off and there will be a lots of people who use the free credit and never convert.