The Real-Time Buying (RTB) CPM network Sovrn enables you to serve advertisements. It functions similarly to an exchange where you first "announce" or make your current ad inventory available, allowing the advertisers to adjust their bids to obtain your ad inventories.

Based on the ultimate fill rate and cost RPM that you receive, your actual revenues will be determined. By selecting a higher floor, you can "improve" your overall RPM, but as you raise the pricing floor, your fill rate will start to fall.

Sovrn serves as a reasonably good AdSense substitute, given that AdSense has recently made less money. 

At least a $25 balance at the end of the month is required to be paid by Sovrn. Once your account balance reaches $25, your payment will be submitted in approximately 30 days. However, for wire transfers, the minimum payout threshold is $50 and for ACH, Check, Check and Paypal, it is $25.

Essentially, Sovrn does not have a pageview limit for publishers, but it is preferred that you have at least 1,000 daily page views.  

Sovrn offers the following ads:

Leaderboards Ads: These are display ads placed in a prominent position to make them easily visible.

Outstream Ads: These are ads that autoplay in a large format whenever a user navigates to it within text content.

Instream Ads: These are ads that appear within video content, like pre-roll ads.

Signal Ads: these are multi-variant targeted ads that show the data that the site collects.