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Cesar Zanis · Interactive Assets & Open Formulas

Decision simulators, FinOps & public data.

Five free interactive tools designed to stress-test cloud spend, engineering maturity, operational governance, and fiscal trade-offs backed by primary sources.

100% free · No sign-up wall · Auditable formulas
01 · Macroeconomics · PT-BR Edition
10 priority points · Exportable 9:16 visual card

Brazil 2055 Decision Laboratory

Allocate political and budgetary capital across fiscal balance, basic education, infrastructure, and productivity. Inspect long-term trade-offs and export a custom social card (interface in Portuguese).

Technical basis & sources: Official series from Central Bank of Brazil, National Treasury, IBGE, IMF, and World Bank.

Open Brazil 2055 Lab (PT)
02 · Cloud FinOps & Engineering
USD monthly/annual forecast · Payback in months

Executive Cloud ROI & FinOps Calculator

Estimate realistic USD cloud savings across AWS, Azure, and GCP combined with engineering automation hours. Export an executive risk scorecard or share scenarios via URL.

Technical basis & sources: Field benchmarks from multi-cloud right-sizing, reservations, and CI/CD automation.

Simulate Cloud ROI
03 · Governance & Trade-offs
Practical scenarios · 1st & 2nd order effects

Interactive Real Decisions Panel

Navigate real management, engineering, and public policy dilemmas by weighing hidden costs, institutional incentives, and measurable outcomes.

Technical basis & sources: Systems thinking, economic incentives, and operational KPIs.

Explore Decision Panel
04 · Architecture & DORA Metrics
Fast diagnostic · DORA score & bottleneck map

DevOps & Engineering Maturity Assessment

Answer focused questions on deployment pipelines, observability, test automation, security, and FinOps to benchmark your engineering organization.

Technical basis & sources: Grounded in DORA metrics (Lead Time, Deployment Frequency, MTTR, and Change Failure Rate).

Start DevOps Assessment
05 · Fiscal Satire · PT-BR Edition
14 browser mini-games · Real public finance data

Brasilia Turbo Arcade (14 Satirical Games + Fiscal Data)

Browser arcade turning 91% mandatory budget rigidity, tax litigation, and VAT burden into playable mechanics linked directly to primary-source essays (interface in Portuguese).

Technical basis & sources: Official data from Brazilian National Treasury, OECD, Insper, and Central Bank.

Play Brasilia Turbo Arcade (PT)

Parametric Calculators Inside Deep Studies

7 interactive models for economics, SRE, and applied AI

Interactive Tax Simulator

Dual VAT (CBS + IBS) Impact on Your Operation

Adjust monthly revenue, creditable input share, and headline VAT rate to compare net tax burden against the legacy cumulative services regime (8.65%) and the 26.5% statutory cap.

Open simulator in study
Formal Job Transition Simulator

Current Rule (Flat 50%) vs. 100% / 50% / 25% Ramp During Probation

Compare monthly household income when taking a formal job and verify that both designs cost the exact same 6 full benefits over 12 months.

Open simulator in study
Federal Budget Rigidity Simulator

How Much Investment Space Remains When 91.4% of Spending Is Mandatory?

Simulate mandatory primary spending share over a R$ 2.30 trillion federal budget base and compare discretionary space for infrastructure and R&D against the OECD benchmark (< 70%).

Open simulator in study
Neutral Real Rate (r*) Simulator

Public Debt Stabilization & Interest Burden Calculator

Compute the primary fiscal surplus required just to stabilize Debt-to-GDP given the real interest rate (r*), real GDP growth (g), and gross debt ratio.

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Corporate Balance Sheet Diagnostic

How Much Capital Does Tax Litigation Drain From R&D and Growth?

Estimate annual financial drag from surety bonds, bank guarantees, and legal defense on disputed tax assessments vs. the OECD norm.

Open simulator in study
AI Unit Economics Calculator (CPTR)

Cost Per Resolved Task (CPTR) vs. Manual Handling

Measure whether your AI agent generates real operating margin after accounting for failed runs that escalate to human operators (paying twice).

Open simulator in study
Critical Systems SRE Calculator

Serial Composite Availability & Annual Downtime Exposure

See what happens to real-world SLA when synchronous microservices chain together on your critical path, and how much asynchronous decoupling saves.

Open simulator in study

Open reference & peer connections

Deep studies, verified cases, and direct peer exchange.

These simulators are freely available to ground decisions in verifiable data. Peer technical exchanges, engineering leadership, speaking invitations, or complex architecture challenges arise naturally through affinity and referral.