FHIR Resource to represent Next Best Action

Given the rise of Next Best Actions as a common term in the industry is there a FHIR resource that would it best?

It’s not a term I’ve heard used in a healthcare context. If you’re talking about defining the ‘rules’ for establishing what actions should be taken in what circumstances, you’d be looking at PlanDefinition. If you’re looking at a recommendation about what action should be taken for a particular patient at a particular time in a specific context, you’d be using one of the ‘request’ resources (ServiceRequest, MedicationRequest, DeviceRequest, etc.) or possibly Task with an ‘intent’ of ‘proposal’.

Thank you. Yes, you’re right, both Request and Task make sense.