SPIDER delivers an innovative Cyber Range as a Service platform that extends and combines the capabilities of existing telecommunication testbeds and cyber ranges into a unified facility for (i) testing new security technologies, (ii) training modern cyber defenders in near real-world conditions, and (iii) supporting organizations and relevant stakeholders in making optimal cybersecurity investment decisions. At its core, it is a highly customizable dynamic network modeling instrument that enables real-life virtualization and real-time emulation of networks and systems. This will be complemented by cyber econometric capabilities, enabling users to forecast the evolution of attacks and their associated economic impact through the application of innovative risk analysis methodologies, econometric models, and real-time attack emulation.