KDDI · Musashi IoT Platform · AWS Cloud Infrastructure

Infrastructure as code, at automotive scale.

The cloud foundation behind Musashi - KDDI's IoT platform for the automotive industry - architected on AWS and built to enterprise telecom standards, with the entire environment defined as code rather than hand-rolled.

12 months, from architecture to operations.

musashi-infra · terraform

$ terraform plan

Refreshing state... done

+ module.network

+ module.compute

+ module.data

+ module.observability

Plan reviewed and approved

$ terraform apply

Apply complete - environment matches definition.

Client: KDDI
Sector: Telecom · automotive IoT
Platform: Musashi
Role: Cloud infrastructure, build + run
Engagement: 12 months, into support
Stack: AWS · Terraform · CI/CD
Expertise: Full Stack Development, Cloud and DevOps Engineering, AI and Data Engineering

The need

A platform this critical can't run on hand-rolled environments.

KDDI needed the large-scale cloud infrastructure for Musashi, its IoT platform serving the automotive industry - built and operated to enterprise telecom standards on AWS. At that scale, standing environments up by hand doesn't just slow a team down; it becomes the risk register. Undocumented changes. Snowflake servers. Recovery plans that live in one engineer's head.

What Musashi needed was reliable, repeatable, code-defined provisioning - infrastructure the team could change safely, recover from quickly and audit confidently, at the volume and reliability KDDI's automotive partners depend on.

One environment, defined as code

Reliable, repeatable, code-defined provisioning

Change safely

Every modification is reviewed, versioned and applied through the pipeline - no undocumented drift, no mystery state.

Recover quickly

The entire environment can be rebuilt from its definition. Recovery is a re-run, not an archaeology dig.

Audit confidently

The infrastructure's history is its commit history - who changed what, when, and why, from day one.

What we delivered

The full environment, as a versioned definition.

We architected the Musashi cloud infrastructure on AWS over a 12-month engagement and built it out in Terraform, so the complete environment - networking, compute, data services, permissions - exists as reviewable, versioned code. Around it we stood up the DevOps practices that keep it deployable and operable day to day: CI/CD, automated provisioning and monitoring.

Architecture designed for automotive-scale telemetry
Terraform end to end - the environment is a repository
CI/CD pipelines for infrastructure changes
Automated provisioning - new environments from code
Monitoring and alerting wired in from day one

Automotive partners

The manufacturers and fleets that depend on it

Musashi platform

KDDI's IoT platform for the automotive industry

Our scope

Delivery & operations

CI/CD, automated provisioning, monitoring

Our scope

Terraform definition

The full environment as versioned, reviewable code

AWS foundation

Networking, compute, storage and data services

How it runs

Discipline is the deliverable.

The practices we stood up matter as much as the architecture. Infrastructure changes ship the way good application code ships - through a pipeline, with review, rollback and a full audit trail - so the platform stays fast to change and safe to operate.

1
Commit
A change starts as code, in review
2
Plan
Terraform shows exactly what will change
3
Review
Humans approve the diff, not the vibe
4
Apply
The pipeline makes the change - identically, every time
5
Monitor
Dashboards and alerts confirm the result

Everything as code

Networking, permissions, services - if it exists, it's in the repository. The environment can't drift from its definition.

Pipelines, not people

Provisioning is automated. Humans review and approve; machines execute - identically, every time.

Observability first

Monitoring and alerting are part of the environment's definition, not an afterthought bolted on later.

Recovery as a feature

When everything is code, rebuild is a capability you rehearse - not a crisis you improvise.

By the numbers

What we can state today - and what's coming.

0Months, architecture to operations

0%Of the environment defined as code

0Partner, from architecture through to operations

The word from the team

“Automotive scale teaches you that reliability isn't a feature you add - it's a property of how the infrastructure is made. Because Musashi's environment exists as code, we can change it safely, rebuild it quickly and account for every change since day one. That's what lets a platform like this keep its promises.”