FaaSr review
A self-managed framework for orchestrating event-triggered R functions across FaaS providers.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
FaaSr is an open-source framework for executing R functions as cloud workloads and coordinating them into serverless workflows. It is aimed at data-processing and scientific work that benefits from elastic, event-driven execution without directly managing servers. R users who want to orchestrate workloads across supported function-as-a-service environments are the clearest fit; teams seeking a hosted service or a general-purpose, multi-language platform should look elsewhere.
The defining capability is workflow orchestration around R functions: users can define workflows, then invoke workloads through event triggers, with execution delegated to external FaaS providers. That makes FaaSr an orchestration layer for R-focused serverless work rather than a hosted compute service. Its value depends on whether that language focus and provider-delegated execution match the workload; teams needing a broader runtime focus may find the scope too narrow.
FaaSr is open-source and self-managed, so deployment and operation remain with the user rather than being provided as a hosted commercial service. The project is available without a paid plan structure, but self-management also means the team must own its environment and operational responsibilities. Documentation is the listed support channel. Choose FaaSr when R workflow orchestration across FaaS providers and control over deployment matter; consider an alternative if you want managed hosting, broader language coverage, or support beyond documentation.
FaaSr pros and cons
- Where it wins
- Runs R functions as serverless cloud workloads.
- Defines and orchestrates workflows of serverless functions.
- Supports event-triggered execution on external FaaS providers.
- Where it doesn't
- Focused on R rather than multiple programming languages.
- Requires users to deploy and operate it in their own environment.
- Support is centered on documentation.
FaaSr fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update