Cloud4Testing is an innovative software-as-a-service (SaaS) offering from Rohde & Schwarz. The platform is accessible with a browser without having to install any additional software or plugins. The first cloud-ready signal analysis tool is the vector signal explorer (VSE) software that brings the experience and power of signal analysis directly to the user’s desktop. It helps users analyze and solve problems in analog and digitally modulated signals for a wide range of standards, including 5G and LTE/ NB-IoT. Also included is the WinIQSIM2 signal creation software, which supplies standard compliant reference signals to VSE for all modern digital communication systems. With an intuitive, user-friendly interface and a convenient way of creating standard-conforming waveforms but also allowing user-specific adaptations and waveform generation, WinIQSIM2 covers a wide range of applications.