The decision system

What is a decision system?

It's how an organization sees how its operation will respond to a hard call, tests the options, and decides on evidence, the same way every time. The model is the core. The system makes the answer repeatable and puts it in your team's hands.

How it works

Distinct stages, each answered by a capability

Five stages, from framing the call to making it. A different capability does the work at each one. When the decision returns, the system runs it again.

How a decision gets madeFive stages — frame the decision, build the model, test the options, interrogate together, make the decision — with SimWell capabilities as a band beneath and a feedback loop returning to the start, and a feedback loop that runs it again when the decision returns. Framethe decision Buildthe model Testthe options Interrogatetogether Makethe decision Run it again CAPABILITIES, DEPLOYED WHERE THE DECISION NEEDS THEM Data Engineering · Data Science Simulation · Optimization AI & Machine Learning

Frame the decision

Name the call, the constraints that actually bind, and the operating reality that shapes the answer.

Build the model

The operation built as it runs, on your own data, validated against how it actually behaves.

Test the options

Run the scenarios, compare the tradeoffs, and stress the answer against the bad day, not the average one.

Interrogate together

The room reasons from one picture, questioning the model in plain language until the disagreement settles.

Make the decision

Decide on evidence, with the alternatives, risks, and tradeoffs known. The call stays yours.

The five stages, up close

How the work actually runs

A pen-and-ink drawing of an industrial site where the main route splits into three possible paths, none chosen yet.
Stage 01

Frame the decision

Before any model gets built, the call itself has to be pinned down: who owns it, what options are genuinely on the table, and which constraints actually bind versus the ones people assume. Most of the value is decided here. A model built before the decision is understood will be rigorous, accurate, and useless.

A pen-and-ink drawing of the operation below and the same operation redrawn as a model above it in orange.
Stage 02

Build the model

The operation gets built as it actually runs, on your own data, including the decisions that never make it into a process document: which job jumps the queue, what the dispatcher does when a truck is late, why the second shift behaves nothing like the first. Then it is validated against how the operation really behaves, so the answers hold up.

A pen-and-ink drawing of an analyst at a workstation on the floor, reading a result climbing in orange on the monitor.
Stage 03

Test the options

Each option runs against the model, including the conditions that break a plan: the surge, the breakdown, the two landing in the same hour. The comparison is not against an average day but against the days that actually cost you, so the answer you carry forward is the one that survives a bad one.

A pen-and-ink drawing of a group at a wall monitor working through a result shown in orange.
Stage 04

Interrogate together

The whole room works from one picture instead of competing spreadsheets. People question the model in plain language, push on the assumptions, and watch it respond, until the disagreement that used to stall the call resolves into something everyone can see. This is where a standoff becomes a decision.

A pen-and-ink drawing of the same site as stage one, now with one route committed in orange.
Stage 05

Make the decision

The decision gets made on evidence, with the alternatives, the tradeoffs, and the remaining uncertainty all in view. The model shows what each option leads to; the people who know the operation decide what that means. The call stays yours, and now it can be defended in front of anyone who asks.

Why it is more than a model

More than a model

The model is the core: a working replica of how the operation behaves. But a model answers the question once.

The system is everything that makes the answer repeatable: the model, the tool your planners run, the validated logic behind it, and the way it comes back whenever the decision returns. We build the model. Your team runs it, reads the results, and makes the call.

What separates a system from a study

  • 01It makes the operation's behavior visible before you commit
  • 02It treats each option as a hypothesis you can test
  • 03It answers the same way every time the decision recurs
What the model surfaces

The questions a decision system forces

Your team is not the problem. No person, however experienced, can hold every interaction in a modern operation in view at once. A decision system does, so the questions that get skipped under time pressure become the ones the model answers first.

01

What happens two steps downstream

A change that relieves one bottleneck often creates another somewhere else. The model follows the effect through the whole system, not just the step in front of you.

02

Whether the local win is a system loss

Optimizing one line, shift, or site can quietly cost the network more than it saves. The model weighs the local move against the whole.

03

Where the constraint actually sits

The bottleneck everyone points at is often not the one that governs the outcome. The model finds the constraint that really moves the number.

04

What breaks under variability

Plans hold on an average day and fail on a bad one. The model runs the surge, the breakdown, and the two landing at once, so you see the edges before they find you.

05

Which assumption the answer rests on

Every plan is a prediction built on assumptions no one wrote down. The model makes them explicit and shows which one the outcome is most sensitive to.

06

What is still uncertain, and by how much

A single number hides its own risk. The model reports the range, so a call gets made with the uncertainty in view rather than assumed away.

The capabilities behind it

The stack, brought to a single decision

01

Simulation

The operation built in a dynamic environment that runs through time, so a delay upstream, a surge, and a breakdown all land where they really would. Options get tested there, risk-free, before anyone commits.

02

Optimization

The most effective way to deploy resources, schedules, and routes under real constraints, and where time, money, and capacity are being lost.

03

AI & Machine Learning

Predictive and prescriptive layers that answer what is likely to happen and what to do about it, supporting human judgment rather than replacing it.

04

Data Science

The patterns, drivers, and relationships in your data that point to where the real opportunities and risks are, so the model is built around what matters.

05

Data Engineering

Clean, connected pipelines that keep the model accurate, validated, and fed by your own systems, so the understanding stays current.

06

Digital Twin

A model with live data flowing into it, so runs are tied to the actual state of the operation at that moment.

Only when a live loop exists
Your decision system

Own it, and run it yourself

Everything above is how a decision system gets built and used inside an engagement. When you want to own that system and run it yourself, on your own terms and every cycle, it takes the shape of a product.

The model, in your hands

A working model of your operation, running on top of the systems you already have, ready for the next decision and the one after.

Run by your team

Your planners open it, run this week's numbers, and compare the options, without waiting on a specialist.

Governed and defensible

Validated, versioned, and traceable, so every result holds up in front of a board or a capital committee.

Ready every cycle

Testing an option becomes part of normal planning, not a study you commission again each time.

That product is Compass

Compass is the environment that makes a decision system self-serve: your models, run in the browser, governed, and owned by your team. Most of our work never needs it, clients come to make a decision and the system stays with them either way. When you want to run it yourself, this is how.

See Compass
Start here

Bring one decision

Right now the hardest call is probably splitting the room or sitting unmade, and the weight of getting it right is on one desk. A model the whole room can question turns that into a call made on evidence instead of conviction. If modeling won't help, you'll hear that in the first conversation.