Today, AWS HealthOmics introduces the resource fallback directive for tasks in your Nextflow workflows, enabling you to define an ordered list of preferred accelerator types, including an option to fallback to CPU instances. Researchers and bioinformaticians can use this directive to reduce time spent diagnosing and resubmitting runs due to accelerator constraints and keep production workflows running. AWS HealthOmics is a HIPAA-eligible service that helps healthcare and life sciences customers accelerate scientific breakthroughs at scale with fully managed bioinformatics workflows.