I don’t use Icinga too much in my current role, but in my previous role I used it for a year and a half, and I have used Icinga within the past year.

I started using Icinga in 2015. 

I have been using Icinga 2 since it was released in 2014.

I've been using the solution for about two to three years. 

I have used Icinga for 18 months.

I have been using Icinga for slightly more than two years since I have been using Icinga to provide professional services online and in-house.

Currently, I use the web version 2.11.

I have been using Icinga for six months. I am a customer of the product.

I have been using Icinga for three years.

I have been using Icinga in multiple companies for at least seven years.

I used Icinga 2.4 for several months and have been using Icinga 2.6 for four weeks now.

I started using Icinga approximately one year ago.

Three to five years.