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Shiji — Custom Webflow for a global hospitality provider

Coach and minibus hiring service with quote system

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An online travel booking platform for Australia's most viral content creators

Booking platform for community-based tourism

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AnchorSpan — system for warehouse, port, and delivery visibility

BSTK  Grandbus — bus ticket booking platform

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Tour operator's guide to preventing cancellations

10 fast no-dev conversion fixes for travel & transportation websites

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Logistics

Employee transportation software: Features, benefits, and best solutions

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A complete guide to warehouse slotting optimization

Check our blog

Services

Architecture consulting

Travel software architecture consulting

Some technical choices are easy to fix, but core architecture isn’t. How your platform handles inventory, supplier connections, partner data, and payments will lock you in for years. Our travel software architecture consulting helps you make them with your eyes open: what each option costs, and how hard it will be to change later. You get a design your engineers can build and a written record of every decision.

Industry leaders we work with

Krytter logoLocation Live logoShiji logoArrival logoDriven connect logoStayaltered logoRoad rally logoRoadster logo
Krytter logoLocation Live logoShiji logoArrival logoDriven connect logoStayaltered logoRoad rally logoRoadster logo
Platform development

Where our travel software architecture consulting helps you

Health check for an existing platform

We read your code, infrastructure, and monitoring data to find tight coupling, single points of failure, slow paths, and debt that’s quietly growing. You get a ranked list of issues with the business risk behind each one.

Target design for a new platform

Starting fresh is the cheapest moment to get structure right. We define services, boundaries, data ownership, and hosting, often recommending a well-organized modular core first and splitting it only where scale demands it.

Supplier integration layer

Every supplier API behaves differently on holds, cancellations, and errors. We design adapters, a shared booking model, retry and idempotency rules, and event flows that keep one flaky supplier from slowing down the rest.

Multi-tenant and white-label structure

When partners share one platform, isolation has to be designed in from the start. We plan tenant boundaries, role-based access, per-tenant settings, and how data stays separated in every layer.

Data model for inventory and money

Availability calendars, rate rules, deposits, refunds, and commissions need structures that stay correct under concurrent bookings. We design schemas and ledgers your finance team can trust.

Peak-load and scaling plan

We model what happens when traffic jumps tenfold: which parts slow down first, where caching and queues help, and how auto-scaling should respond. Then we confirm the riskiest assumptions with load tests.

Step-by-step modernization roadmap

Replacing an old system in one big switch rarely ends well. We plan how new services take over one function at a time, with the old platform still running until each piece proves itself.

Decision records and diagrams

Every choice gets an architecture decision record explaining the options and the reasoning. C4 diagrams at system, container, and component level live in your repository, where engineers will actually find them.

Our consulting roadmap

Get an estimate

1

Collect the constraints

Good architecture starts with what can’t change.

  • Business goals, budget, team skills, deadlines, and compliance rules get written down.

  • These shape every option that follows.

Deliverable: constraints and goals brief

2

Read the system

For existing platforms, we study code, infrastructure, and production metrics.

  • Interviews with your engineers fill in the history behind past decisions.

  • Pain points are tied to evidence.

Deliverable: current-state assessment

3

Weigh the options

Each big decision gets two or three realistic options.

  • Cost, risk, effort, and future flexibility are compared side by side.

  • You choose with full context.

Deliverable: options analysis

4

Draw the target

The chosen direction becomes C4 diagrams and decision records.

  • Integrations, data flows, and failure handling are spelled out.

  • Your team reviews and challenges the design.

Deliverable: target architecture, decision records

5

Prove the risky parts

Uncertain pieces get tested with small proofs of concept.

  • Supplier calls, concurrency, and load limits are checked with real code.

  • The design is adjusted to what the tests show.

Deliverable: proof-of-concept results, load test findings

6

Stay close during the build

Architects review pull requests and answer questions as development starts.

  • Decision records are updated as the system evolves.

  • The design stays useful long after the first release.

Deliverable: review schedule, updated documentation

What well-planned foundations made possible

170+

Properties connected to Stay Altered through two integrations

45+

Countries covered by that single integration layer

3

Currencies with local payouts added to Re:Plan in the same change

120,000+

Sessions on ARRIVAL before public launch

20,000

Weekly active users ARRIVAL serves today

Platforms whose foundations we designed

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Our architecture stack

Modeling and documentation

C4 model

Mermaid

OpenAPI

Confluence

Services and messaging

Node.js

Python

Ruby on Rails

Go

Apache Kafka

GraphQL

WebSockets

Data and caching

PostgreSQL

Redis

DynamoDB

Cloud and validation

AWS

Docker

Terraform

JMeter

Postman

Learn more about our comprehensive technology stack

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What makes our consultations credible

Security thinking under ISO/IEC 27001

Our certified information security processes shape how we treat access, encryption, and data separation in every design we propose.

Repeatable reviews under ISO 9001

Architecture reviews follow documented steps, so findings are consistent and comparable from one review to the next.

AWS-certified Solutions Architects

Cloud designs come from certified architects who also know what it takes to run them in production.

Advice tested on systems we maintain

Our recommendations come from platforms we’ve built and still support, including live integrations with Nezasa, Katanox, HyperGuest, and Stripe.

4.9 on Clutch, members of GBTA

Verified clients rate COAX 4.9 out of 5 on Clutch, and we belong to the Global Business Travel Association.

Why teams choose travel software architecture consulting with us

Advice shaped by platforms in production

We design around supplier APIs, payment providers, and booking peaks we’ve handled firsthand. Recommendations reflect what has worked under real traffic.

Options with the trade-offs spelled out

You’ll see the cost, risk, and long-term effect of each path before anything is decided. The final choice stays with you, backed by clear reasoning.

Designs sized to the team that runs them

A design only works if your engineers can operate it. We match complexity to your team’s size and skills, and add more only when growth calls for it.

Change while the business keeps running

We plan transitions so travelers never notice them. Re:Plan switched payment providers and added three payout currencies with zero service interruption.

FAQ

Before you pick major vendors or start a new build, when growth is starting to strain the current system, or after an outage that left the team unsure why it happened. Earlier involvement usually means cheaper changes.

COAX Software provides it for booking platforms, marketplaces, travel CRMs, and back offices. We help teams decide how to structure services, connect suppliers, separate partners, and scale for peak season. Each engagement ends with diagrams and decision records your team keeps.

COAX Software does. Our travel software architecture consulting covers reviews of existing platforms, target designs for new ones, integration and data architecture, and step-by-step modernization plans. The architects behind it also build and run travel platforms.

COAX Software can. We start from your business constraints, compare realistic options, and document the chosen design as C4 diagrams and decision records. Risky parts are tested with small proofs of concept before the full build begins.

We use C4 diagrams at several levels of detail and short decision records for each major choice, stored in your repository next to the code. Engineers update them as the system changes, so the documentation stays current.

COAX Software does, with designs built around each client’s suppliers, payment flows, and growth plans. A creator travel brand, a hotel resale marketplace, and a coach hire platform all needed very different foundations, and that’s how we approached them. You own every diagram, document, and decision record.

COAX Software can. We design the inventory model, supplier adapters, booking and payment flows, and caching for peak load. Stay Altered’s integration layer, for example, connects 170+ properties across 45+ countries through just two supplier APIs.

Insights from the COAX blog

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The ultimate fleet management software development company: Top 10 options to work with

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Top 10 travel app development companies in 2026

September 30, 2026

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Smart warehouse guide: Key technologies, features, and best practices

September 28, 2026

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Employee transportation software: Features, benefits, and best solutions

September 18, 2026

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A complete guide to warehouse slotting optimization

September 17, 2026

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Short-term rental software: A complete guide to choosing the right tools

September 16, 2026

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What is fleet telematics? Turn vehicle data into better fleet decisions

September 14, 2026

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Travel

Why do you need a cloud hotel management system?

September 11, 2026

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Warehouse control systems explained: Workflow, features, and solutions

September 10, 2026

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What we’ll do next?

  • 1

    Contact you within 24 hours

  • 2

    Clarify your expectations, business objectives, and project requirements

  • 3

    Develop and accept a proposal

  • 4

    After that, we can start our partnership

Serhii Danyliuk

Head of Strategic Partnerships