Comparison of multi-size pricing and flexible sizes in Ad Exchange
The flexible sizes feature will be deprecated soon and replaced with the Enable ad slot contraction in backfill network setting. Learn more
Both multi-size pricing and flexible sizes enable you to monetize inventory for multiple sizes in a single Ad Exchange ad request. Use the following table to understand the different options and benefits of each.
|Flexible sizes||Multi-size pricing|
|Resizing of ad slots||No resizing. (Doesn't support collapsable iframes; if a smaller creative fills a large slot, there is blank space around the creative).||A GPT ad slot resizes to fit the winning ad size.|
|Price granularity||Same price for all creative sizes that fill a given slot size. The price floor for the slot size applies.||Can set different minimum CPMs for different ad sizes in a single ad request.|
|Requires Ad Manager?||No, but works with Ad Manager dynamic allocation, as long as the request sent to Ad Exchange contains one slot size only.||Yes.|
|Supports Preferred Deals and Private Auctions?||Yes.||Yes.|
|Supports custom sizes?||Yes. Provides increased demand/fill.||Yes but standard sizes are more likely to fill.|
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