I have experience in managing products with Agile methodologies(Scrum, Lean Dev and Kanban). Functional specifications and Unit-Testing enables me to communicate effectively with development teams.
Micro details are an integral part in building a product, which translates into breaking a product into feature sets and then further breaking it down to frontend and backend tasks. This ensures an efficient QA process so that the product is built as specified.
The chart below is standard interpretation of product features which are managed in a staging environment prior pushing in production environment.
'Soft-Launch' of a product is far more effective where early adopters are invited to evaluate and share feedback (bugs or UI/UX issues) before the product is publicly launched.