NOVELTY - System setup comprises fermentation unit; data acquisition unit (DAI); and cloud computing unit having database (DB), file storage (FS), data calculation and user interface; where system is arranged such that online, real-time data on fermentation process is transferred from fermentation unit via data acquisition unit to cloud computing unit to be displayed for online user, where system also comprises laboratory simulation platforms and/or full-scale processes in which all data acquisition, data interpretation and data storage is performed centralized on cloud computing unit.    USE - For monitoring and/or controlling fermentation processes (claimed); useful for producing gases such as biogas or hydrogen.    ADVANTAGE - The system setup provides no risk of data oversaturation; and allows the physical system to remain fairly simple without special need of large computational power or storage capacity. The system has easy setup; as the system is automatically connected to a cloud setup, this alleviates some of the internet configuration problems that can occur when dealing with localized setups. Data access can be achieved without the user having to configure local equipment for the intranet they are located at. No port forwarding or similar steps are needed as the system uploads all the data automatically at a port that is normally open for external communication if the connection originates on the internal network. The system provides easy updating and maintenance. Hosting the user interface and the calculations on an external server under direct control of the service provider also makes updating the software with more features or fixing bugs much easier. There is much less of a need for users to manually patch the physical machine. The file server also provides a very convenient solution for users to store their generated reports, which may be accessed at any time from any internet connected location. The system setup provides a new process simulation tool designed e.g. for laboratory-scale experiments or process monitoring tool for full-scale operation. The flexible setup has a user-friendly interface hosted in a cloud environment, an instrument platform that is able to perform continuous fermentation tests in a very accurate and reproducible manner with minimal work load for both operation follow up and data interpretation. Hosting the setup in a cloud environment offers great benefits in terms of unmatched accessibility, reliability and flexibility which are ideal for a data intensive continuous anaerobic fermentation test or operation. Furthermore, the system offers high precision gas production monitoring that may rely on a flow meter array for ultra-low gas flows using the principle of liquid displacement and buoyancy.    DETAILED DESCRIPTION - System setup comprises fermentation unit; data acquisition unit (DAI); and cloud computing unit having database (DB), file storage (FS) capability, data calculation capability and user interface capability; where the fermentation unit is connected to acquisition unit which in turn is connected to cloud computing unit so that online, real-time data on the fermentation process can be transferred from fermentation unit via data acquisition unit to cloud computing unit to be interpreted and displayed for online user, and where the system setup enables measuring in the fermentation unit and/or data acquisition unit of online, real-time data on the fermentation process, where the system setup also comprises laboratory simulation platforms and/or full-scale processes having fermentation unit connected with cloud computing unit; which is connected to data acquisition unit so that all data acquisition, data interpretation and data storage is performed centralized on the cloud computing unit.    DESCRIPTION OF DRAWING(S) - The figure shows schematic diagram of system setup.    Bioreactor (BR)    Data acquisition unit (DAI)    Database (DB)    File storage (FS)