Hi there! I've been digging into Single Sign-On with Salesforce, stuck on the differences in some of the settings that Salesforce gives us, namely:
1. If you need to configure Salesforce as a Service Provider, we use "Single Sign-On Settings".
2. If you need to configure Salesforce as an Identity provider, we use "Identity Provider".
3. For what specific purposes does "Enable SAML" exist in the Connected App? This is the integration of the Service Provider with Salesforce, but won't the data from Identity Provider settings be enough?
After you enable the org as an Identity Provider, it is in the connected app where you complete the configuration and that's when you use "Enable SAML".
You can also try it between two salesforce developer edition orgs. This is a great article to follow step-by-step.
https://help.salesforce.com/s/articleView?id=sf.sso_between_multiple_orgs.htm&type=5
This is article with general information of identity provider.
https://help.salesforce.com/s/articleView?id=sf.sso_sfdc_idp_saml_parent.htm&type=5
