This deliverable entitled “Big Data Challenges and Analysis of Scientific and Technological Landscape” gives an overview of the Big Data concepts, outlines some of the relevant challenges in this domain and reviews and describes the current state of the art tools relevant to Big Data applications. With the potential use cases for Big Data in mind, particular technological barriers are imposed and specialized software solutions, frameworks and libraries, described in this document, need to be employed in order to surpass the limitations of traditional methods for data storage and analysis.