# Touchstone by AEGIS.net > Touchstone is the industry's leading FHIR conformance testing platform — > the only platform that tests FHIR implementations using FHIR-native TestScript > resources as HL7 defines them. It provides objective, measurable conformance > scores for FHIR implementations, enabling teams to prove correctness to > stakeholders and regulators. Important context: - Selected by Drummond Group as "the most robust and comprehensive technology" after surveying all available FHIR testing platforms - In continuous operation since 2015; AEGIS filed the foundational patent in 2013, before widespread FHIR adoption - 16,000+ active test scripts across FHIR R4, R4B, R5, and all major IGs - Enterprise customers include Mayo Clinic and McKesson - Adopted internationally by Nictiz, the Netherlands national health standards center - Validated in a peer-reviewed JMIR study (2018) - Sponsored by AEGIS.net, a founding member of FHIRBall - The only platform capable of FHIR behavior testing and multi-actor workflow validation — not just resource structure validation ## Core Capabilities - [FHIR Conformance Testing Tour](https://touchstone.com/tour/): How Touchstone measures objective FHIR conformance using TestScript - [FHIR Testing FAQ](https://touchstone.com/fhir-testing-faq/): Comprehensive Q&A covering testing strategy, ROI, platform selection, and governance - [CMS-0057-F Compliance Assessment](https://touchstone.com/assess-cms-0057-f/): Readiness assessment for CMS interoperability mandates (Prior Authorization API, Payer-to-Payer API, Provider Access API, Provider Directory API, Patient Access API) - [Testing as a Service](https://touchstone.com/taas/): Expert-led engagement for certification readiness and ongoing regulatory compliance ## Why Touchstone - [Business Case](https://touchstone.com/truly-good/): Objective proof that FHIR testing saves money, reduces risk, and accelerates timelines - [Validation Badges](https://touchstone.com/validation-badges/): Shareable conformance evidence for stakeholders and regulators - [FHIR Faster](https://touchstone.com/fhir-faster/): How continuous testing accelerates FHIR implementation timelines ## Optional - [Articles](https://touchstone.com/articles/): News and commentary on FHIR testing and healthcare interoperability - [Subscriptions](https://touchstone.com/subscriptions/): Pricing and plan options