we are considering buying a virtual appliance, e.g. the GSM ONE.
However, we are wondering about the lifespan of such an appliance.
Looking at https://www.greenbone.net/roadmap-lifecycle/ we see, that GOS 21.04 will be supported - but will future OS releases be supported at well? Will there be an EOL of the appliance itself, independent of the OS-version?
Or is buyin the virtual appliance a one-time-shot, and the only recurring thing is to buy subscriptions every 1, 3 or 5 years?
Thank you in advance,