A Practical Guide to Display Advertising

Display advertising is going through two changes at once this year, and they’re pulling in different directions. On one hand, the mechanics of buying ad space are becoming more automated and more precise than at any point since the banner first appeared in 1994. On the other, a fast-deteriorating economy is squeezing marketing budgets across nearly every industry, which means every dollar spent on display now needs to justify itself harder than it did a year ago.

The infrastructure shift underway

Google closed its roughly three billion dollar acquisition of DoubleClick back in March, a deal that took nearly a year to clear antitrust review on both sides of the Atlantic. Yahoo made a similar bet the year before, buying the Right Media exchange to get into automated ad trading. What both moves signal is the same thing: the biggest platforms in the industry are betting that display inventory will increasingly be bought and sold through exchanges, where impressions are matched to buyers algorithmically, rather than through the manual, insertion-order-by-insertion-order process that’s defined display buying for over a decade.

For advertisers, the practical effect so far is more choice in how inventory gets purchased, not yet a wholesale replacement of the old process. Direct deals with publishers still dominate for premium placements, but exchange-based buying is a real and growing option worth testing, particularly for advertisers who want more granular targeting than a single site’s ad server can offer.

Behavioral targeting is under real scrutiny

The industry has spent the last two years selling advertisers on behavioral targeting: showing ads based on a user’s browsing history rather than just the content of the page they’re on. It works, but it’s also drawn sustained attention from the Federal Trade Commission, which has been pushing publishers and ad networks toward clearer disclosure and opt-out mechanisms for the data collection involved. Any advertiser leaning on behavioral targeting right now should expect the rules around consent and data use to keep tightening, not loosen, and should favor partners who are already ahead of that curve rather than fighting it.

Where display earns its budget

• Retargeting people who already visited your site. Reaching someone who abandoned a cart or browsed a product page converts at a rate cold display can’t touch, and it’s one of the easiest cuts to defend when a budget review comes around.
• Building awareness cheaply at scale. For a brand that needs reach rather than an immediate click, display remains far cheaper per impression than most alternatives.
• Rich media for a considered purchase. Flash-based expandable and video units let a category like automotive or travel tell a fuller story than a static banner allows, though they cost more to produce and to serve.

Where it struggles

Cold display aimed at a broad, untargeted audience still produces weak direct-response numbers, and in a budget environment where every campaign gets questioned, that’s the first line item likely to get cut. If a campaign can’t show either strong direct performance or a credible awareness argument backed by something more than raw impressions, it’s going to be hard to defend into next year.

Buying discipline that matters more in a downturn

• Insist on viewable inventory, not just served impressions. An ad that loads below the fold and is never scrolled to shouldn’t count the same as one a person saw.
• Watch for fraud on remnant and network inventory. Cheap impressions bought through lower-tier networks carry a real risk of bot traffic, and it’s worth asking any network directly what fraud protection they run.
• Prioritize retargeting budgets first if cuts are coming, since it’s the segment of display spend most likely to still show a defensible return.
• Test exchange-based buying in parallel with existing direct deals, rather than switching over entirely, until the newer automated buying options have proven themselves against your specific numbers.

Display in a recession isn’t a channel to abandon so much as one to run leaner and more accountably than the industry has generally bothered to over the last decade. The advertisers doing that now will be well positioned once budgets loosen again.