Even delivery, also known as even pacing or even flow, is a term used in the context of online advertising to refer to the practice of distributing the impressions or clicks of an advertising campaign evenly over the course of the campaign's duration. Even delivery is often used to ensure that an advertising campaign reaches its target audience consistently and effectively, and to avoid issues such as ad fatigue or over-exposure. Even delivery can be achieved through a variety of means, such as frequency capping, pacing algorithms, or manual adjustments to the campaign's budget or targeting. Even delivery is particularly important for long-term or large-scale advertising campaigns, as it can help to maximize the return on investment and the effectiveness of the campaign.