As it wraps its third year in the ad business, Netflix is switching to a new metric to capture viewership on its ad-supported tier.

The streaming giant said Wednesday it now reaches more than 190 million monthly active viewers. The company defines MAVs as subscribers watching at least one minute of ads on Netflix per month, multiplied by how many people are watching in a given household. The household numbers are from Netflix’s own first-party research.

Netflix’s previous update on its ad tier came last May, when the company said it had grown to 94 million monthly active users. The MAU metric is widely used across ad-supported streaming, though there is debate in industry circles about how accurately it captures the ads being watched, as opposed to programming. In Netflix’s case, MAU

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