We have multiple external systems that have access to our Salesforce record IDs & we'd like to build links from those external systems to our Salesforce records. What is the correct way to do that?
Should we just navigate to the Id of the record (like we used to do in Classic)? https://testdotcom.my.salesforce.com/TEST_ID_HERE
Or should we use the view URL for Lightning? https://testdotcom.my.salesforce.com/lightning/r/Account/RECORD_ID_HERE/view
Are there other options? What are the pros & cons of each approach? Is there an official Salesforce guide that instructs us on how external sites should build links to Salesforce records?