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Service 03

Systems integration

Most organisations do not need another system. They need the ones they already have to agree with each other.

Overview

The value is usually in the joins.

Customer records in three places, invoices re-keyed by hand and overnight batch jobs nobody dares to touch are familiar signs of systems that grew separately. Each one may be reasonable. It is the gaps between them that cost time and introduce errors.

We treat every integration as a small product with an owner, a contract, tests and monitoring. Messages are designed to survive retries, failures are visible, and someone can see at a glance what happened to any given record.

Integration also reaches below the application layer, into networks, identity and infrastructure. We work across those layers so that a project does not stall at the boundary between teams or vendors.

What we do

Applications, data, networks and identity.

  • Application and API integration

    Connecting ERP, CRM, finance, ecommerce and line-of-business systems through APIs, webhooks and middleware.

  • Event-driven architecture

    Message queues and event streams that decouple systems, with idempotent consumers and defined replay procedures.

  • Data migration and synchronisation

    Mapping, cleansing and moving data with rehearsals, reconciliation reports and a tested way back.

  • Identity integration

    Single sign-on and lifecycle provisioning, so that access starts and ends in one place when people join, move or leave.

  • Network and infrastructure design

    LAN, WAN, VPN, SD-WAN, firewalls and segmentation for offices, data centres and cloud connections.

  • Hybrid and multi-site connectivity

    Reliable and secure links between on-premises systems and cloud platforms, with DNS and routing that stay understandable.

  • Middleware and platform selection

    Independent advice on whether you need an iPaaS, a message broker, or simply a small and well-kept service.

  • Monitoring and supportability

    Dashboards, alerts and traceability, so a failed transaction can be found and fixed without a detective story.

How it runs

How an integration project runs.

  • 01

    Map

    We draw how data and processes actually move today, including the manual workarounds.

  • 02

    Decide

    We define the source of truth for each kind of data, along with ownership and failure handling.

  • 03

    Contract

    We specify interfaces, security and service expectations before anyone writes code.

  • 04

    Build and test

    We implement against test environments, using realistic data and deliberate failure cases.

  • 05

    Cut over and operate

    We move traffic in stages, reconcile the results and hand over monitoring and runbooks.

What you receive

A joined-up system that stays understandable.

  • A current-state and target-state system map
  • A data ownership and source-of-truth register
  • Interface specifications and automated contract tests
  • Network diagrams and configuration kept under version control
  • Migration, reconciliation and rollback plans
  • Monitoring dashboards, alerts and support runbooks

A good fit when

When this service tends to help.

  • Staff re-enter the same data into several systems
  • An acquisition or restructure has left you with duplicate platforms
  • You are replacing a core system and everything connects to it
  • Integration failures are found by customers before they are found by you
  • Your network has grown organically and few people can explain it

Questions

Things people usually ask

Do you work with our existing vendors?
Yes. Integration work nearly always involves other suppliers. We can coordinate technically with them, and we will be open with you about what each party is responsible for.
Do we need an integration platform?
Sometimes. If you have a handful of simple connections, a platform can add more cost than value. We compare the options against your volume, skills and budget.
What if a vendor's API is poorly documented?
That is common. We test its behaviour directly, record what we learn in contract tests, and design around its limits so that surprises are contained.
Can migration happen without downtime?
Often with very little, using parallel running and staged cut-over. Sometimes a planned window is simpler and safer. We will advise based on your actual risk.

Other services

Start a conversation

Tell us what you are trying to do.

A few plain sentences are enough. Send us the problem, the deadline if there is one, and what has already been tried. We will tell you honestly whether we are the right people to help.

Get in touch support@vnet.nz