DSPs: how to pre-filter creative sizes in Atomx User Interface | With today’s blog post we want to encourage DSPs to pre-filter their supply, using our Atomx User Interface. This will help making our Ad Exchange faster, because it prevents Sellers from sending unnecessary ad requests to DSPs, adding them to a bidding battle field they are actually not willing to invest in.
By submitting creatives in certain sizes a direct buyer at Atomx determines the publisher banner spots he is interested in. But a DSP does not submit any creatives. DSPs use endpoints to collect ad requests. No information is given to Atomx about preferred creative sizes.

DSPs: Log in to Atomx, open your RTB advertiser campaign -> choose Targeting -> Include the sizes your demand supports.

DSPs: how to pre-filter creative sizes in Atomx User Interface
DSPs: how to pre-filter creative sizes in Atomx User Interface