"Enterprise software development has long been plagued by a fundamental disconnect: the gap between architectural intent and actual implementation. Static diagrams gather dust while code evolves, compliance reviews create month-long bottlenecks, and architectural decisions become lost knowledge scattered across documentation that nobody reads. Morgan Stanley felt this pain acutely until they decided to solve it with code. On August 15, 2025, Morgan Stanley open-sourced CALM (Common Architecture Language Model) v1.0 through FINOS, marking a pivotal moment for the DevOps community."
""Architecture is a critical part of the software development lifecycle," explains Trevor Brosnan, Morgan Stanley's global head of technology strategy, architecture, and modernization. "Architecture decisions are complex to change, so getting it right the first time is imperative." Traditional architecture documentation creates friction in modern DevOps pipelines. Teams spend weeks navigating security reviews, compliance checks, and architectural approvals that should be automated."
Enterprise software development faces a persistent gap between architectural intent and implementation, causing stale diagrams, lost decisions, and lengthy compliance bottlenecks. Morgan Stanley open-sourced CALM v1.0 on August 15, 2025 through FINOS to codify architecture as machine-readable definitions. CALM uses a JSON Meta Schema to standardize architecture descriptions, enabling validation, automated checks, and visualizations that integrate with DevOps pipelines. The system has been applied to over 1,400 internal deployments, reduced months-long approval cycles, and accelerated production timelines. CALM converts architectural building blocks into executable artifacts that bridge design and delivery.
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