Hi Siham,
I've included the link below, and you will find your answer.
Cisco Catalyst 8300 Series Edge Platforms FAQ - Cisco
Software subscription is mandatory for Cisco Catalyst 8000 Series Edge Platforms at the initial time of purchase of the hardware. The software subscription is mandatory for both Autonomous mode (traditional routing) and Controller mode (SDWAN). To enable all advanced Cisco DNA capabilities, customers will require Cisco DNA Premier or Cisco DNA Advantage which is packed with powerful features. Cisco DNA Essentials offers basic automation, configuration, and management capabilities.
Purchasing the hardware alone does not provide entitlements to use the device in either the Controller or the Autonomous mode. A Cisco DNA subscription is needed to enable the software capabilities supported. A network stack is needed for Autonomous mode and a Cisco DNA stack is needed for Controller mode operation. These licenses are included as part of Cisco DNA subscription. Term-based licenses are mandatory for Catalyst 8000 Edge Platform Family at the initial time of purchase to unlock any capabilities.