Way to monitor whether a software is running as a service or not

Hello, I am new to icinga and icinga web2 and I would like to know if there is any way to monitor if a software is running as a service or not. The software I am mentioning is a software that has micro server services REST HTTP and a Web Service, it also allows to perform GET for obtaining and PUT for inserting data.the program is installed with ubuntu 20.04 on the client host and is monitored from debian 10