Where do feature ideas come from?

So if you are a developer, you probably know the official way, where does the feature come from? The product, usually taking the marketing research and listen to the customer's feedback. By that, we are prioritized which feature we should take for the next sprint. But here in Horca, we are the another aspect. Since we are dealing a large data set, we are always researching a new technology that will help us to improve our existing services so we can support our customers.