Traceability needs constant upkeep
Requirements, interfaces and tests drift across sheets as the system changes and new owners join the programme.
For fast-moving space teams
Spend time building, not managing requirements spreadsheets.
Arc replaces spreadsheets, Python scripts, fragile file links and manual verification tracking with AI agents that help keep requirements, traceability and evidence in sync
02 The operating reality
Spreadsheets break as programmes move.
Requirements, traceability and verification evidence are often held together manually. As the system changes, maintaining that structure becomes a systems engineering workload of its own.
01 Mission + external inputs
02 Requirements + product
03 Cross-cutting controls
04 Verification + evidence
05 Configuration + change
Mission objectives.docx
CONOPS.docx
Customer spec.docx
Launch constraints.docx
Mission reqs.xlsx
System reqs.xlsx
Space segment.xlsx
Ground segment.xlsx
Launch interface.xlsx
Payload reqs.xlsx
Bus reqs.xlsx
Operations reqs.xlsx
Ground equipment.xlsx
Equipment specs.xlsx
Interface register.xlsx
Architecture + modes.docx
Mass + power budgets.xlsx
Data + link budgets.xlsx
Risk + hazard log.xlsx
V&V plan.docx
Verification control.xlsx
Test procedures.docx
Analysis reports.xlsx
Test results.xlsx
Compliance closure.xlsx
Document register.xlsx
Baseline index.xlsx
Change requests.xlsx
Impact assessments.xlsx
Waivers + deviations.xlsx
Review actions.xlsx
Spreadsheet friction starts at kick-off, compounds with every update and becomes delivery risk at review.
Every change creates more admin
Systems engineers manually search upstream and downstream links to understand what a proposed change affects.
Reviews become reconstruction exercises
Before PDR, CDR and release reviews, teams pull together requirement status, test results and verification evidence by hand.
03 Arc product
Arc keeps the whole engineering programme connected.
One structured workspace for requirements, architecture, systems and tests, with agents helping the team keep every dependency current as the programme changes.
03.01 Product feature
Single source of truth
Bring requirements, architecture, systems and verification into one flexible, structured workspace that models the programme your way. Define the item types, fields and relationships your engineering process needs, so every item has a clear place and stays connected as the programme evolves, without being forced into a fixed schema.
Requirements
Create, assign, review and evolve requirements in one connected record.
Architecture
Map system structure, subsystem boundaries and the interfaces between them.
Systems
Organise components, parameters and requirements within each system.
Tests
Trace every requirement to its test cases, results and verification evidence.
03.02 Product feature
Collaborative workspace
Use Git-style branches to give every engineer a safe place to propose changes. Compare diffs, discuss the work in context, resolve conflicts and merge approved updates back into the programme baseline.
Team collaboration
Manage permissions, ownership and comments directly alongside the requirement.
SystemUpper stage
SubsystemPropulsion
SubsystemFlight control
Requirement · PROP-014Burn duration3 comments
TestHF-027Linked
MM
MoniqueCan we link HF-027 before merge?
Branching & merging
Propose changes safely, compare the diff and merge approved work into the baseline.
ViewingProgramme baseline
⌄
BaselineApproved record · 2d ago
Current
burn-durationJosh · Ready for review
+4−2
hotfire-evidenceMonique · Updated now
+1
Proposal #184
Update qualified burn duration
2 files changed +4 −2
−145 s
Qualified burn duration+160 s
Qualified burn duration
No conflicts · 2 approvals
03.03 Product feature
Impact analysis
A single requirement change can ripple through dozens of downstream artefacts. See the full blast radius, including which test cases, design elements and sibling requirements are affected, before you commit.
Impact trace ready
Programme dependency graph
- Items
- 125
- Levels
- 7
- Tests
- 25
- Affected
- 67
The graph contains 100 requirements and 25 test cases arranged across seven levels. Severe impacts include test case HF-002 and eight items across the final two levels; unaffected branches remain neutral.
03.04 Product feature
Agents
Use read-only agents to continuously monitor programme context, check coverage and surface issues. Use drafting agents to propose suggested changes for engineers to review, so your team stays in control.
05 Outcomes
Keep fast-moving development ready for review.
See the impact of every change, keep verification aligned and reach each review or release with current evidence instead of relying on a last-minute spreadsheet exercise.
Keep engineering time on the product
Give the whole team a current view of requirements, interfaces, tests and evidence without adding another layer of coordination.
Catch change impact early
Trace affected requirements, interfaces and verification work before a local decision becomes cross-team rework.
Keep verification aligned
Maintain ownership, coverage and evidence as the product evolves, so the next review starts from a trusted record.
06 Govern
Built for Enterprise.
Your programme. Your audit trail. Your deployment controls.
Governance
Control access and change
Full control and visibility across requirements, reviews and verification evidence.
- Role-based access for sensitive programmes
- Change history and review controls stay connected
- Traceable evidence for audit preparation
Security
Protect engineering data
Security controls shaped around the requirements of each deployment.
- Engineering data encrypted in transit and at rest
- Configurable retention and access policies
- Customer content is never used to train third-party models
Deployment
Run in your environment
Deploy Arc around the infrastructure and processing rules your programme requires.
- Customer-hosted or customer-controlled backend
- On-premise and firewall-contained options
- Use approved models and compute providers
07 FAQs
Frequently Asked Questions
How does Arc protect our engineering data?
Arc protects engineering data in transit and at rest, with role-based access controls designed for sensitive programmes. Security, retention and access policies can be shaped around the requirements of each deployment.
Is Arc available for on-premise deployment?
Yes. Arc can be deployed with a customer-hosted backend or in a customer-controlled environment, including on-premise and firewall-contained deployments. We will work with your security and infrastructure teams to define the right setup for your programme.
Can Arc support our existing regulatory and compliance needs, such as ISO 26262, ASPICE or DO-178C?
Arc helps teams maintain the requirements traceability, change history, review controls and verification evidence their existing processes require. It supports your compliance workflow and audit preparation; certification and approval remain with your organisation and the relevant authorities.
How does AI help without taking control away from engineers?
Arc can use models and compute providers approved for your deployment, under deployment-specific processing rules. Customer content is never used to train third-party models. Agents trace dependencies, check coverage and propose updates, while engineers remain responsible for meaningful changes and approvals.
How do we migrate from our existing spreadsheets?
Start with the spreadsheets from one active programme, system or review. Arc can import the existing requirements, fields, links and verification evidence, map them into a connected model, and let your team review the structure before expanding the rollout.
How does Arc help us manage requirements changes?
Arc traces the upstream and downstream items affected by a proposed change, including interfaces, test cases and verification evidence. Teams can assess the impact, review the update and approve it before the system baseline moves.
Can Arc support PDR, CDR and verification reviews?
Yes. Arc keeps requirements, ownership, traceability, test cases and verification evidence connected as work progresses, giving reviewers a current system record and reducing the manual reconstruction needed before formal reviews.
08 Get started today
Move faster without compromising engineering rigour.
Try Arc for free and see how AI agents keep requirements, traceability and verification evidence aligned as your programme changes.