Click the Start a free trial link to start a 15-day SaaS trial of our product and join our community as a trial user. If you are an existing customer do not start a free trial.
AppDynamics customers and established members should click the sign in button to authenticate.
Please check out this License Documentation page here https://docs.appdynamics.com/22.1/en/appdynamics-essentials/appdynamics-licensing
Note there are a few other nested pages under the one I shared where you might be more other relevant information.
Please let me know if this helps.
Ryan, AppDynamics Community Manager