What an in-house build gives you
Full control over logic, data and roadmap, tailored to how your business works today.
Control comes with a cost
Building it yourself vs running on a platform
In-house integrations can make sense when requirements are truly unique. But for most growing ecommerce teams, the ongoing cost isn’t the first build — it’s everything after it.
What it also takes on
API changes, monitoring, edge cases, new channels, security, documentation — and the people who know how it all works.
What Commercium adds
Prebuilt, maintained integrations and orchestrated workflows across orders, inventory, fulfilment, finance, product data and EDI — from a team that’s done it for 15+ years.
At a glance
Commercium vs in-house solution
Sixteen areas where growing ecommerce teams feel the difference between building and buying.
Area
In-house solution
Commercium
Time to launch
In-house: Months of scoping, building & testing per integration
Commercium: Go live on supported channels in days to weeks
Ongoing maintenance
In-house: Your team absorbs every API change & deprecation
Commercium: Integrations maintained & updated by Commercium
Edge case coverage
In-house: Limited — discovered one incident at a time
Commercium: Maximum coverage from 15+ years of ecommerce integrations
Order routing & fulfilment
In-house: Routing logic designed, coded & maintained internally
Commercium: Routes by inventory, location, shipping method & capacity
Adding a new channel
In-house: A new build for every marketplace
Commercium: Add supported channels on existing workflows
EDI
In-house: Specialist build or a separate EDI provider
Commercium: EDI built in alongside commerce integrations
Finance & settlements
In-house: Fees, refunds & payouts are extra builds
Commercium: Sales & settlements connected to accounting & ERPs
Product data & listings
In-house: Per-channel attributes & listing rules built internally
Commercium: Create, enrich & adapt listings per channel
Monitoring & operations view
In-house: Logs and alerts you build yourself
Commercium: Orders, inventory, fulfilment & exceptions in one view
Reliability & scale
In-house: Peak-season load is your infrastructure’s problem
Commercium: Platform built for high-volume, multichannel commerce
Infrastructure
In-house: Needs ongoing management; limited scalability
Commercium: Fully scalable, fully managed infrastructure
Security & compliance
In-house: Your team owns audits, encryption & access control
Commercium: SOC 2 Type II, GDPR, AES-256 encryption
Key-person risk
In-house: Knowledge sits with the engineers who built it
Commercium: Documented platform backed by a dedicated team
Total cost of ownership
In-house: Build cost + engineering time + maintenance + infrastructure
Commercium: Predictable subscription; less engineering time
Developer & AI access
In-house: Whatever your team builds and documents
Commercium: API & MCP access to commerce workflows
Dedicated account manager
In-house: No external support — your team is the support desk
Commercium: Dedicated account manager with ecommerce operations experience
The detail
16 things you take on when you build it yourself
Each one is ongoing engineering work. Here’s how Commercium takes it off your team’s plate.
01
Time to launch
With an in-house solution
Every connection starts as a project: requirements, API research, data mapping, development, QA and rollout. Selling on a new channel waits until it ships.
With Commercium
Supported channels and systems are already built. Teams configure, test and go live — without starting an engineering project.
02
Ongoing maintenance
With an in-house solution
Marketplaces and platforms change APIs, auth methods, rate limits and required fields regularly. Each change becomes unplanned work for your developers.
With Commercium
Commercium tracks and implements platform changes across its integrations, so updates don’t land on your sprint board.
03
Edge case coverage
With an in-house solution
Split shipments, partial refunds, cancellations, bundles and marketplace-specific rules often surface only after something breaks in production.
With Commercium
Built on 15+ years of building and maintaining ecommerce integrations, Commercium already handles the edge cases real channels produce.
04
Order routing & fulfilment
With an in-house solution
Moving orders is one job; deciding where they ship is another. Routing rules for standard, same-day and rapid delivery all need to be built and kept current.
With Commercium
Order routing rules are part of the platform, applied across supported channels, warehouses and 3PLs.
05
Adding a new channel
With an in-house solution
Each new marketplace means a new API, new mappings and new business rules — and another integration to maintain.
With Commercium
New channels plug into the workflows you already run. Configuration and testing still apply, but the build is done.
06
EDI
With an in-house solution
Purchase orders, acknowledgements, invoices and shipment notices each have strict formats and partner-specific requirements — specialist work to build in-house.
With Commercium
Integrated EDI runs alongside marketplace, ERP and fulfilment workflows.
07
Finance & settlements
With an in-house solution
Internal builds usually start with orders and inventory; settlement reconciliation is often deferred, leaving finance working manually.
With Commercium
Sales and settlement data flow into accounting systems or ERPs, giving finance more complete transaction data.
08
Product data & listings
With an in-house solution
Each marketplace has its own categories, attributes and image rules. Building and maintaining those mappings is a product in itself.
With Commercium
Catalog and listing tools manage product information and channel-specific listings across supported channels.
09
Monitoring & operations view
With an in-house solution
Visibility depends on the dashboards, alerting and retry logic your team has had time to build.
With Commercium
Operations teams see activity and exceptions across connected channels and systems in one place.
10
Reliability & scale
With an in-house solution
Rate limits, queueing, retries and infrastructure scaling all need to hold up on your busiest days.
With Commercium
A platform operated for high-volume sellers, with 99.98% uptime.
11
Infrastructure
With an in-house solution
Servers, databases, queues, backups and patching all need to be provisioned and managed by your team — and scaling for new channels or peak volume is limited by what you’ve built and can afford to run.
With Commercium
Commercium runs on fully managed infrastructure that scales with your order volume and channel count, with no servers for your team to provision, patch or monitor.
12
Security & compliance
With an in-house solution
Storing marketplace credentials, customer and order data means owning security reviews, encryption and compliance.
With Commercium
Built to SOC 2 Type II and GDPR standards, with AES-256 encryption.
13
Key-person risk
With an in-house solution
When the developers who built an integration move on, the knowledge of how — and why — it works often leaves with them.
With Commercium
The platform is maintained and supported by Commercium, independent of changes in your team.
14
Total cost of ownership
With an in-house solution
The first build is only the start. Ongoing costs include developer time, infrastructure, monitoring, fixes and the opportunity cost of what that team isn’t building.
With Commercium
A platform subscription consolidates integrations and workflows. Whether that lowers total cost depends on your current setup and requirements.
15
Developer & AI access
With an in-house solution
APIs and AI access exist only if your team builds, secures and maintains them.
With Commercium
API and MCP access let developers build on your commerce workflows and connect AI tools directly.
16
Dedicated account manager
With an in-house solution
When something breaks, your own team investigates, fixes and communicates — often at the worst possible time.
With Commercium
A dedicated account manager with ecommerce operations experience, plus 12×5 support.
The bottom line
Own the business, not the plumbing.
In-house integrations give you control, but they also make your team responsible for every API change, edge case and new channel. Commercium gives you that control through configuration — on a platform that’s already built, maintained and supported.
Handled by Commercium
API changes
Edge cases
Order routing
EDI
Settlements
Listings
Monitoring
Infrastructure
Security
Stop rebuilding integrations.
Put your engineering team on what makes your business different — Commercium runs the commerce integrations and workflows.
Customers
Our Proud Customers
