Swepay is a Brazilian cloud-native infrastructure startup providing identity and security building blocks for fintechs and regulated financial institutions in Brazil. Our products include NativeGuard (OAuth2/OIDC server targeting FAPI 1.0 Advanced certification for Open Finance Brasil), CA Manager (API-first mTLS digital certificate platform with CRL/OCSP) and Passkey (FIDO2/WebAuthn passwordless authentication). We run on AWS with a serverless multi-tenant architecture using .NET 10 NativeAOT, DynamoDB single-table, SNS/SQS, SES, KMS and ACM-PCA, distributed through AWS Marketplace.