Landing Page vs Homepage
A homepage serves the broader site. A landing page serves a specific campaign.
Homepage job
A homepage introduces the organization and routes different visitors to different parts of the site.
Landing-page job
A landing page narrows attention around one offer, audience and action.
Which should paid traffic use?
When the campaign has a focused promise, a matching landing page usually gives you more control over the message and conversion path.
When a homepage is enough
Brand searches or broad discovery campaigns may reasonably use the homepage when no single conversion action dominates.