Twitter Results Presentation Deck
Metrics
Twitter | 2019 Annual Meeting of Stockholders
We define monetizable daily active usage or users (mDAU) as Twitter users who logged in or were
otherwise authenticated and accessed Twitter on any given day through Twitter.com or Twitter
applications that are able to show ads. Average mDAU for a period represents the number of
monetizable DAU on each day of such period divided by the number of days for such period.
Changes in mDAU are a measure of changes in the size of our daily logged in or otherwise
authenticated active user base. To calculate the year-over-year change in mDAU, we subtract the
average mDAU for the three months ended in the previous year from the average mDAU for the same
three months ended in the current year and divide the result by the average mDAU in the previous
year. Additionally, our calculation of mDAU is not based on any standardized industry methodology
and is not necessarily calculated in the same manner or comparable to similarly-titled measures
presented by other companies. mDAU are calculated in the same manner as DAU used in
calculations for Change in DAU presented in previous periods.View entire presentation