U ovom radu opisane su osnove obrade toka podatka, kada i zašto se koristi te prednosti takve obrade. Isto tako u ovom radu opisani su osnovni koncepti platforme Apache Beam, njene komponente (cjevovod, PCollection, PTransform itd.), njene funkcionalnosti te način izvođenja aplikacija definiranih pomoću skupova razvojnih alata Apache Beama.This paper describes the basics of stream processing, when and how it is used and the advantages of such processing. In addition, this paper describes the basic concepts of Apache Beam platform, its components (pipeline, PCollection, PTransform etc.), its functionalities and how to run applications defined by Apache Beam software development kits