Microsites offer useful information about a product, without necessarily pushing a call-to-action (CTA), like a macrosites but smaller in scope. If they are created with the intention of pushing a product, these sites are rewarded with higher rankings because of their quality content, backlinks credibility and more. (Again… read about backlinks here.)
How about an example. Domino’s created a microsite for its new “Delivery Expert” (DXP) Chevrolet Spark car. At dominosdxp.com, users can “test drive” the DXP to learn about how it was made, Domino’s commitment to delivering hot pizzas, and so on. The call-to-action, i.e. ordering a pizza, is subtly pushed by showing a map of current DXP’s in the U.S.
Why is this hailed as a top microsite? Because it is engaging and does not feel like an overt advertisement, even though everyone knows it is. A microsite about lease returns that also presents options for new leases or purchases of vehicles on your lot could be exactly the kind of campaign to boost your SERP ranking and bring in another wave of traffic.