1/ DeFi Protocols today face a tradeoff between security and upgradeability. We refused to choose and made our architecture both upgradeable and secure.

2/ We built a modular smart contract architecture: secure, upgradeable, and designed for long-term scalability. Traditional proxy-based upgrade patterns create storage collisions and complex dependencies. Concrete architecture solves this with a unified storage layer and modular components that can be swapped individually.

3/ Each contract in Concrete fits into one of four tiers: → Protocol -- entry point → Modules -- orchestrate logic → Blueprints -- execution brains → Actions -- execute single-purpose functions Every tier is isolated, auditable, and replaceable without breaking the system.

4/ Security isn’t sacrificed for flexibility. Each module must be whitelisted by governance, and access control is enforced protocol-wide. Audits, formal testing, and controlled role separation ensure production-grade safety across every vault and strategy.

5/ This modular foundation makes Concrete future-proof. New strategies, vault types, or credit systems can be integrated seamlessly, without exposing users to new risk. It’s how we build securely today for the systems of tomorrow.*

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