External Services: Connect to a Service Using a Wizard (Lightning Experience)

Use External Services to connect to a service of your choice. Then create a flow to invoke methods and use data from the external service in Salesforce, all with the help of a wizard.
Resources:
External Services: https://help.salesforce.com/articleView?id=external_services.htm
Create a Flow: https://help.salesforce.com/articleView?id=vpm_designer_flow_create.htm