How We Work
Methods connect the disciplines to the mission system.
ExistX applies a connected set of engineering approaches across all four disciplines to reduce integration, assurance, lifecycle, and transition risk.
Starting point
Research first, then operationalization
Advanced applied research may already exist for the hardest part of the problem. ExistX begins from the strongest available baseline and carries it through mission fit, architecture, implementation, verification, deployment support, and sustainment.
Galois-to-ExistX Research Pipeline
Galois provides research; ExistX operationalizes. The pipeline defines the handoff, attribution, and engineering responsibility.
Research Operationalization
The lifecycle approach that connects an approved technical baseline to mission fit, architecture, implementation, verification, deployment, and sustainment.
Methods
Engineering methods
These approaches run across the four disciplines, from architecture and integration through assurance, test, interoperability, and sustainment.
Digital and Model-Based Engineering
Models, mission engineering, MBSE, simulation, and virtual integration expose problems before physical integration and connect decisions to evidence.
Modular Open Systems Approach
Stable boundaries, replaceable components, defined interfaces, standards, conformance evidence, and appropriate technical-data and IP planning.
Early Integration and Experimentation
Components and technologies integrated before full-system test through prototypes, hardware- and software-in-the-loop environments, incremental demonstrations, and explicit readiness decisions.
Risk-Based Technical Assurance
Formal verification, program analysis, automated verification and validation, test, independent review, and certification support selected proportionately to the property, mission consequence, boundary, and residual uncertainty.
Automated Test and Verification
Repeatable evidence generation automated while distinguishing test, analysis, proof, validation, and operational evaluation.
Interoperability Engineering
Contracts, data models, interfaces, standards, and conformance boundaries defined across components and systems.
Sustainment by Design
Upgradeability, obsolescence, technical-data access, source-code and software rights, maintenance flexibility, configuration, provenance, and product support addressed early.
Method × discipline
Every method spans all four disciplines
Risk-based assurance applies to cryptographic implementations as much as to system integration; MOSA boundaries shape software and systems alike. The discipline pages show each method in its technical context.
- Cryptographic EngineeringConnects algorithm and key-management decisions to implementation, assurance, agility, embedded constraints, and lifecycle transition.
- Cybersecurity EngineeringIntegrates threat, architecture, software, components, evidence, and lifecycle decisions within a defined system boundary.
- Software Engineering & ModernizationMission-software and lifecycle engineering: architecture, modernization, DevSecOps, automated testing, assurance, migration, and incremental delivery.
- Systems Engineering & IntegrationConnects mission needs to architecture, embedded systems, interfaces, digital models, hardware-software integration, test, and lifecycle decisions.
Next step
Start with the research pipeline
The pipeline explains where the research starting point comes from, how attribution stays clear, and where ExistX's engineering responsibility begins.
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