RESTful web services can be used within APEX components to allow data from external sources to be used within an APEX application. Examples of how to do this can be found here: https://explorer.co.uk/web-services-part-1/
RESTful web services can be used within APEX components to allow data from external sources to be used within an APEX application. Examples of how to do this can be found here: https://explorer.co.uk/web-services-part-1/