Infrastructure as Code for Regulated Environments: Terraform vs Pulumi vs Crossplane

Infrastructure as Code (IaC) is a compliance accelerator in regulated environments. When every infrastructure change must be reviewed, approved, and auditable, manually provisioning resources through a web console is not just inefficient — it is non-compliant. IaC provides a code-based audit trail, version control, and automated validation that satisfies regulatory requirements. We have deployed Terraform, Pulumi, and Crossplane in production at banks and fintechs. Each has distinct trade-offs for regulated environments. The choice depends on your team’s programming expertise, compliance requirements, and existing infrastructure. ...

April 20, 2026 · 6 min · jnas

Comparing Serverless Compute Options

The operational overhead of managing physical or virtual servers—ranging from patching OS vulnerabilities to manually configuring scaling groups—has long been a persistent bottleneck for engineering teams. The fundamental problem being solved by serverless architecture is the decoupling of infrastructure management from application delivery. By abstracting the hardware layer and scaling on demand, teams can focus strictly on core application logic. In this article, we’ll examine the primary solutions across modern hyperscalers, detailing the differences between event-driven Functions-as-a-Service (FaaS) and serverless container deployments. ...

February 15, 2026 · 2 min · jnas

Database Migration Strategies for Banks: Zero-Downtime Schema Changes at Scale

Migrating a banking database is one of the highest-risk operations in financial technology. A failed migration can lock customers out of their accounts, corrupt transaction data, or trigger regulatory violations. The database is the system of record — everything else is derived from it. We have migrated banking databases with over 100 million rows and 99.99% uptime requirements. The key is not the migration tool — it is the migration strategy. Every schema change must be backward-compatible, reversible, and testable in production without impacting customers. ...

December 15, 2025 · 6 min · jnas

Platform Engineering for Fintech: Building Internal Developer Platforms That Scale

Hiring more engineers does not make your platform faster. It makes it more complex. When every team provisions infrastructure differently, deploys services differently, and configures monitoring differently, you accumulate entropy faster than you add capacity. Platform engineering is the discipline of converting that entropy into reusable, self-service abstractions. For fintechs, platform engineering has an additional constraint: regulatory compliance. Every infrastructure decision — from network configuration to logging to access control — must satisfy audit requirements. An internal developer platform that makes engineers productive while maintaining compliance is the difference between scaling gracefully and drowning in operational overhead. ...

February 5, 2025 · 6 min · jnas