← Glossary
Operational resilience
Important business service
IBS
In French : Service d'activité important
A service delivered to an external client or to the market whose disruption would cause intolerable harm. It is expressed from the user's viewpoint, never from the org chart.
Source : PRA SS1/21 / FCA PS21/3
Related terms
Impact tolerance
The maximum level of disruption to an important service that an organisation can tolerate, usually expressed in time. It is a regulatory ceiling on harm, not an internal recovery target.
Critical operation
An activity whose failure would materially impair the viability of the institution or the stability of the financial system.