- WhoID in Salesforce refers to people things. So that would be typically a Lead ID or a Contact ID. The WhoId represents a human such as a lead or a contact. The label of this field is Name.
- WhatID in Salesforce refers to object type things. That would typically be an Account ID or an Opportunity ID. The WhatId represents nonhuman objects such as accounts, opportunities, campaigns, cases, or custom objects. WhatId is equivalent to the ID of a related object. The label of this field is Related To.
LWC vs Aura
LWC LWC uses core Web Components standards (Native browser APIs) and provides only what’s necessary to perform well in browsers supported by Salesforce. Because it’s