Reddit is a user-generated news aggregation & curation website. A registered member posts content that the community then votes "up" or "down" to organize the posts by popularity score. A submission's score is simply the number of upvotes minus the number of downvotes. This determines the posted content's position on the site's pages. Anyone can create a community (called "subreddits") independent and moderated by a team of volunteers.

Reddit advertising allows marketers to reach the communities engaging with Reddit online discussion forums. Among the options for advertising are video ads that autoplay in the feeds chosen by the buyer, and Cost-Per-Click (CPC) ads, Cost-Per-Impression (CPM) and Cost-Per-View (CPV) ads. Ads can be purchased through the Reddit ad dashboard.

Reddit Mobile allows users to access all the content of Reddit, and ads created for a smooth mobile experience. Available on Google Play or the App Store, Reddit Mobile allows ways for advertisers to reach specific communities, including via native advertising available in feeds. Its ads platform includes a reporting dashboard. Ads on Reddit can be targeted by user interest, subreddit, location, device and time of day. Locations and subreddits can also be excluded from targeting.