← Back to PeoplePEEngineerPhil EstesPrincipal Engineer at Amazon Web Services (AWS)LinkedInWebsitePhil is a Principal Engineer for Amazon Web Services working on core container technologies.1Mentions1Articles1OutletsCompanies CoveredAWS1The Stack1ArticlesMost recent firstMentioned InReferenced in coverageCedar: The access control building block that's perfectly timed for AI agentsThe StackpositiveSep 7, 2026“Phil Estes, AWS principal engineer, discussed how Cedar was designed as a formally verified authorization system for applications.”