I)It is optimized for both mobile and desktop experiences and proves it with Salesforce1 and Lightning Experience. II)It connects natively with services provided by the Salesforce platform. III)It has specific opinions about how data access is performed and has specific security requirements. IV)All of the above [bg_collapse view="button-orange" color="#4a4949" expand_text="Show Answers" collapse_text="Close Answer" ] [/bg_collapse]