How would Google Analytics credit a channel that contributed to a conversion prior to the final interaction?

Google Analytics credits a channel that contributed to a conversion but was not the final interaction as an "Assisted conversion." This metric highlights the role of channels that help guide users toward a conversion, even if another channel ultimately closed the deal. For example, if a user first found your site through a paid search ad, then later returned directly to make a purchase, the paid search ad would be an assisted conversion. "Primary conversion" is not a standard Google Analytics metric. "Second-to-last-click attribution" and "Last-click attribution" are attribution models that assign 100% of the conversion credit to specific interactions, but they don't specifically describe an assisting role.