Application configuration

How to manage configurations for Appian objects like database connection string, as it would be different for different environments (dev/test/prod) or password may be changed frequently for database, so we can't hardcode database connection while adding connector?

Also can we integrate with third parties provider for configuration management, for example if i am adding connected service (Azure SQL) for database, can we use Azure Key Vault to read connection string, user and passwords during runtime?