Configure the Validity Period and Audiences for ID Tokens
When you configure authentication settings for a connected app, you
can now specify the length of time that an ID token is valid for after it’s issued. Also, you can
specify multiple audiences for the ID token.
Where: This change applies to Lightning communities and Salesforce Tabs + Visualforce communities, accessed through Lightning Experience and Salesforce Classic. Communities are available in Enterprise, Performance, Unlimited, and Developer editions.