Foundations
MTS, ATO, CTO, MTO, ETO — explained
Every manufacturer lives somewhere on a spectrum that trades lead time against customization. Knowing where each of your products sits — and being able to move them toward faster modes — is the whole game. Here’s the map.
Manufacts is strongest across ATO · CTO · MTO — and absorbs ETO without leaving the system.
Make-to-Stock
Built from buffer
Products are built to a forecast and sold from inventory. The customer gets what’s on the shelf.
Example
A standard appliance; a catalog item with no options.
Customization
None
Lead time
Instant
Not the target — but the catalog backbone lives here.
Assemble-to-Order
Built from modules
Pre-made modules and components are assembled into a finished product once the order lands.
Example
A home with selectable, pre-engineered option packages.
Customization
Moderate
Lead time
Short
Core strength — packages, options, and module rules.
Configure-to-Order
Built from options
The customer configures a product from a pre-engineered option space; no net-new engineering per order.
Example
A floor plan with hundreds of valid option combinations.
Customization
High
Lead time
Short–medium
The sweet spot — visual configurator + parametric BOM.
Make-to-Order
Built from scratch parts
Production starts only after the order, often with parametric dimensions, but within known designs.
Example
A custom-width home sized to a specific lot.
Customization
High
Lead time
Medium
Native — parameters drive the BOM and cost automatically.
Engineer-to-Order
Built from a blank sheet
Each order requires net-new engineering. The most flexible, slowest, and costliest mode.
Example
A one-off layout no template covers.
Customization
Total
Lead time
Long
Absorbed — the ETO queue captures one-offs as reusable options.
The real goal: move work leftward
Modes on the right win you deals but cost time and margin. Modes on the left are fast and profitable but rigid. The winners don’t pick one — they pull work toward the left without losing the ability to say yes on the right. Every custom job you engineer once should become a reusable option the next customer simply configures.
That continuous motion — ETO becomes MTO becomes CTO becomes a package — is exactly what a Configure-to-Manufacture platform is built to do. One model spans the whole spectrum, so the boundary between “standard” and “custom” becomes a dial you control.
See how the ETO queue captures one-offs as optionsFind out which fulfillment mode each of your products really needs.
We’ll map your product line across the spectrum and show how much of your ‘custom’ work could become fast configure-to-order.
No rip-and-replace — Manufacts runs alongside your ERP and CAD. Prefer email? hello@manufacts.ai