Monthly Active Users (MAUs): MAUs are only applicable to client side applications. They are defined as unique end users evaluating flags from client-side SDKs (JavaScript, iOS, React, etc.) over a given calendar month. Note: If a user evaluates flags across multiple devices and multiple sessions, we count this as 1 MAU across the calendar month. Anonymous users are assigned a session ID which ensures that multiple visits account for only 1 MAU.