ISO 31000
ISO 31000 is an international standard built around principles, a framework and a process. It is short, applies to any organisation and is guidance, so organisations do not certify against it.
COSO ERM
The COSO framework, updated in 2017 as Integrating with Strategy and Performance, sets out five components and twenty principles. It is widely used by organisations with strong internal control and audit functions.
How to choose
Start with what your board, regulators and auditors expect. Many organisations use the ISO 31000 process for day-to-day risk management and COSO ERM to link risk to strategy. The framework matters less than whether people use it.