Business digitalization, merging of business and IT leads not only to the growth of functionality of IT systems but also to criticality for a business of availability, reliability, the safety of IS. Let 's talk about how an analyst can and should influence such properties of IT systems, that is, non-functional requirements, their identification, application, reflection in project documents. Let 's look at the main classifications (international, state, industry) and scenarios of quality attributes, their application in the work of analytics. The report is based on its own experience. I will share my vision of the analyst 's work checklist to ensure the system is operational.