Case studies / Cloud

Cloud · Financial data & advisory

A templated, governed multi-account AWS foundation

Onboarding new client environments meant rebuilding account structure and governance from scratch each time, with no consistent isolation model. We built a templated foundation that made every new environment consistent from day one.

Templated
Foundation

Every new tenant environment built the same governed way.

Full
Tenant isolation

Complete isolation between client environments.

1
Consolidated bill

Central governance with consolidated billing.

Sector
Financial data & advisory
Engagement
Multi-account AWS landing zone
Problem area
Cloud
Confidentiality
Details anonymised

The challenge

Every new environment, rebuilt from scratch

Onboarding new client environments meant rebuilding account structure and governance from scratch each time, with no consistent isolation model between tenants — slow to stand up and inconsistent once live.

Before

  • Account structure rebuilt manually per client
  • No consistent tenant isolation model
  • Governance applied inconsistently across environments
  • Billing scattered across accounts

After

  • Templated, governed multi-account foundation
  • Complete tenant isolation by design
  • Central governance applied consistently
  • Consolidated billing across the estate

How we approached it

Govern centrally, automate the guardrails, vend accounts repeatably

01

Govern from the centre

We implemented centralised account management with AWS Organizations, Service Control Policies, and consolidated billing — so every linked account inherits the same guardrails and rolls up into one bill.

02

Make security the default

We automated the creation of security groups, cross-account records, EBS encryption, and S3 public-access controls, with VPC and subnet setup driven by IP-range specification — and layered on MFA, password policies, and IAM roles.

03

Deploy consistently

We built automated GitLab CI/CD pipelines so resources deploy and are monitored the same way across every account — giving DevOps teams speed without giving up control.

Under the hood

AWS OrganizationsService Control PoliciesAWS IAMCloudFormationAmazon VPCAmazon EC2 / EBSAmazon S3DynamoDBAmazon ECRGitLab CI/CDPython

Next step

Rebuilding account structure and governance for every new client?

We template the foundation once, so every new environment inherits governance and isolation by default.

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