In connection-oriented communication, a data stream is a sequence of digitally encoded coherent signals (packets of data or data packets) used to transmit or receive information that is in the process of being transmitted. Data Stream is a set of extracted information from data provider. It contains raw data that was gathered out of users’ browser behavior from websites, where a dedicated pixel is placed. Data Stream is useful for data scientists for Big Data and AI algorithms supply. Main data stream providers are Data technology companies: OnAudience.com, Lotame, ShareThis, AddThis, 33 Across. In connection-oriented communication, a data stream is a sequence of digitally encoded coherent signals (packets of data or data packets) used to transmit or receive information that is in the process of being transmitted. Data Stream is a set of extracted information from data provider. It contains raw data that was gathered out of users’ browser behavior from websites, where a dedicated pixel is placed. Data Stream is useful for data scientists for Big Data and AI algorithms supply. Main data stream providers are Data technology companies: OnAudience.com, Lotame, ShareThis, AddThis, 33 Across. In a formal way, a data stream is any ordered pair ( s , Δ ) {displaystyle (s,Delta )} where: