MFA

MFA is the shorthand you will see in DSP settings, verification reports and trade press. It refers to the same thing as made-for-advertising sites: properties with thin content, heavy ad loads, rapid ad refresh and traffic acquired through traffic arbitrage.

The acronym took off in 2023 after the ANA highlighted MFA's share of programmatic spend. Since then, many DSPs, ad verification vendors and SSPs offer "MFA" categories to block or flag. Because each vendor uses its own criteria (ad density, refresh rates, traffic sources, content quality signals), a site can be MFA on one list and not another.

MFA should be kept distinct from ad fraud. MFA traffic may be human and technically valid; the problem is value, not legitimacy. But MFA sites can also mix in bot traffic or sourced traffic, so they often correlate with higher IVT rates. Some people also expand MFA as "made for arbitrage", which describes the same model.

Think of it like this

MFA is like calling a fast-food outlet "junk food": it is real food that fills you up, but not something you want your budget living on.

An example

A DSP report shows a campaign spent US$40,000 on inventory tagged MFA; the trader enables the DSP's MFA exclusion and moves the budget to a curated news deal.