Trust built on process and traceability
Operating the tax layer of an e-commerce requires more than technology. It requires auditable processes, certified security, and total transparency in every tax decision.
How Mastery operates
Information security
Google Cloud infrastructure, encryption in transit and at rest, federated identity management, and access controls by principle of least privilege.
LGPD compliant
Personal data processed on a defined legal basis, with operation logging, a retention policy and channels for data subjects to exercise their rights.
Complete audit trail
Each tax calculation returns the applied rule, the rate source and the
High availability
Multi-zone architecture with automatic failover, global load balancing
Incident management
Runbooks by severity, proactive customer communication, public post-mortems when applicable and a continuous improvement cycle.
Regulatory compliance
A dedicated tax team monitors federal, state and municipal changes, with public release notes for updates to the calculation engine.
Google Cloud Platform
All of Mastery's infrastructure runs on Google Cloud — the same platform that powers Google Search, YouTube and Gmail. That means our customers natively inherit the benefits of enterprise-grade infrastructure.
Cloud Armor — WAF & DDoS
Automatic protection against attacks at the application and network layers. Custom WAF rules and global DDoS mitigation integrated into the load balancer.
AES-256 Encryption & TLS 1.3
Data encrypted at rest (AES-256) and in transit (TLS 1.3). Keys managed by Cloud KMS with automatic rotation and access auditing.
IAM & Identity-Aware Proxy
Granular access control with least privilege principle. Identity-Aware Proxy protects applications without VPN, with contextual authentication.
Data residency — Brazil
Processamento em southamerica-east1 (São Paulo). Dados fiscais nunca saem do território brasileiro, em conformidade total com a LGPD.
Cloud Monitoring & PagerDuty
Continuous monitoring with real-time alerts. Multi-zone architecture with automatic failover and SLOs defined for each critical service.
SOC & ISO Certifications
GCP certified SOC 1/2/3, ISO 27001, ISO 27017 and ISO 27018. Our customers inherit enterprise-grade compliance at no additional cost.
Let's talk
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