No, you don't need to purchase Multiple License for lower environments. As I understand by lower environments you mean local environments yes, for development purpose ? Multiple License is needed if you for example build two different apps and you will have two public instance of it.
For a Single Licence, are DEV, UAT, PROD different installations?
With regard to the "Single Licence", do lower environments count as "Installations"
As in, do i need to buy multiple licences to fill out my lower environments?
Thanks
No, you don't need to purchase Multiple License for lower environments. As I understand by lower environments you mean local environments yes, for development purpose ? Multiple License is needed if you for example build two different apps and you will have two public instance of it.
Best regards, Damian