Further reading

Salesforce Experience Cloud licensing:

https://help.salesforce.com/s/articleView?id=users_license_types_communities.htm&type=5&language=en_US

Setting up sharing sets:

https://help.salesforce.com/s/articleView?id=sf.networks_setting_light_users.htm&type=5

Salesforce data storage allocations:

https://help.salesforce.com/s/articleView?id=sf.overview_storage.htm&type=5

CDP:

https://www.salesforce.com/ap/solutions/customer-360/

Salesforce to Salesforce:

https://help.salesforce.com/s/articleView?id=sf.business_network_intro.htm&type=5

Introduction to Bulk API 2.0:

https://developer.salesforce.com/docs/atlas.en-us.api_asynch.meta/api_asynch/asynch_api_intro.htm