Integration Engineering
Making different systems work as one.
Integration is where one system's design meets another's, and where the assumptions of both surface for the first time.
When the problem shows up three systems later.
Something broke and nobody knows where
The error surfaces at the end of the chain, and the investigation starts in the wrong log.
Every partner has its own contract
With no shared standard, each new integration is a project starting from zero.
The retry became a double charge
Without idempotency, repeating a call creates a second order instead of confirming the first.
Month-end does not reconcile
Two systems hold the same information and neither of them is the source.
What this discipline decides.
APIs
Contract before code, and versioning that lets each consumer move at its own pace instead of all at once.
Events
What happened, published once and consumed by whoever needs it, without the producer knowing who they are or how many there will be tomorrow.
Messaging
Guaranteed delivery, ordering where it matters, and a destination for the message nobody managed to process.
Orchestration
When a flow crosses five systems, someone has to know which step it stopped at and how to undo what already happened.
Integration Contracts
The explicit, testable agreement between both ends, so a change on one side does not discover the other in production.
Failure that stays where it started.
Failure isolated, not propagated
A partner going down stops taking the whole journey with it.
A new integration in days
With a standard and a contract, connecting the next partner stops being a project.
One source per piece of information
Month-end reconciles because one place answers and the others ask.
Running in production
Systems that cannot talk to each other cost you money.
Tell us which systems need to exchange data and we will show you how to connect them.