Managed Cloud for SaaS That Passes Enterprise Review
The account structure, tenant isolation, data-residency options, and recovery evidence enterprise buyers ask about — built as code in your accounts and operated for you.
Who this is for
B2B SaaS companies whose cloud account was set up in year one and now has to answer enterprise questionnaires, serve EU customers, and keep cloud cost in line with revenue per tenant.
Managed cloud for SaaS means an outside team designs and operates the AWS, Google Cloud, or Azure foundation your product runs on — account structure, networking, identity, data stores, backups, and cost controls — as code in your own accounts. The SaaS-specific work is tenant isolation, regional data placement for customers who require it, and knowing what each tenant costs to serve.
What pushes SaaS companies to hand off their cloud
An enterprise security questionnaire asks where tenant data is stored, how it is isolated, who can reach production, and when you last tested a restore.
A European prospect needs its data hosted in the EU and asks for your sub-processor list and transfer mechanism.
Everything runs in one AWS account, and staging shares credentials with production.
Cloud spend is growing faster than revenue and nobody can say which tenants or features drive it.
The disaster-recovery plan has never been tested end to end.
Building a SaaS cloud foundation that holds up in review
The first version of a SaaS cloud environment is usually one account, one region, broad IAM permissions, and a database everyone can reach from a bastion host. It works until the company sells to customers whose security teams read the answers. They ask how responsibility is split with your cloud provider, whether production is separated from development, how encryption keys are managed, how tenant data is partitioned, and what your recovery point and recovery time objectives are — and they increasingly want evidence rather than policy statements.
Tenant isolation is the SaaS-specific design problem. The AWS Well-Architected SaaS Lens describes three broad models: silo, with dedicated resources per tenant; pool, with shared resources and tenant context enforced in code and data access; and bridge, a mix of the two. Most companies pool smaller tenants and silo the customers who pay for it or whose regulators require it. Whichever you choose should be written down, enforced in IAM and the data-access layer, and testable.
Data residency follows the same logic. Hosting EU tenants in an EU region is the technical half. The contractual half is a GDPR Article 28 data processing agreement, an accurate sub-processor list, and a lawful transfer mechanism — the EU-U.S. Data Privacy Framework or standard contractual clauses — for any data that still leaves the region, including support access and logs. We build the regional deployment and document the data flows so your counsel can sign that paperwork accurately.
The SaaS cloud components we operate
Account and project structure
AWS Organizations with separate production, staging, development, logging, and security accounts — or the Google Cloud folder and Azure management-group equivalents — guarded by organization-level policies.
Identity and access
SSO through IAM Identity Center, Google Cloud identity, or Entra ID; no long-lived access keys for people; production access granted by role and logged.
Networking
Private subnets for data stores, controlled egress, and private connectivity such as PrivateLink endpoints for enterprise customers who require it.
Data stores
Managed Postgres, MySQL, DynamoDB, or Cloud SQL with encryption at rest, point-in-time recovery, and documented tenant partitioning — including customer-managed keys where a contract requires them.
Regional deployments
A second-region stack for EU or other residency needs, deployed from the same code so it cannot drift from the primary.
Cost allocation
Tags or labels by environment, service, and tenant tier, feeding a monthly cost-per-tenant view.
What managed cloud for SaaS includes
Multi-account landing zone
A separated account structure built with Terraform in your repository, with centralized logging and guardrails applied to every account.
Tenant isolation model
A documented silo, pool, or bridge design per customer tier, enforced in IAM and data access, with a test you can show a security reviewer.
Data residency deployment
Regional stacks for customers who need them, plus a data-flow diagram that covers backups, logs, and support access.
Backup and recovery evidence
RPO and RTO per service, cross-region or cross-account backups, and restore tests performed and recorded on a schedule.
Security posture management
AWS Security Hub, Google Security Command Center, or Microsoft Defender for Cloud enabled, with findings triaged monthly instead of accumulating.
Cost per tenant
Monthly cost reviews by environment and tenant tier, with rightsizing and commitment purchases where usage supports them.
First 30 days
- Read-only review of accounts, IAM, networking, and data stores.
- Gap list against what enterprise questionnaires ask most: separation, encryption, access, backups.
- Root and admin credentials secured; long-lived access keys rotated or removed.
- One restore performed and recorded.
- A plan for account separation or a regional deployment where needed.
After month one
- Infrastructure changes made through reviewed pull requests.
- Posture findings triaged and fixed each month.
- Restore tests and DR exercises on an agreed schedule.
- Monthly cost-per-tenant report and commitment planning.
- Security questionnaire answers kept current from the real configuration.
Frameworks enterprise SaaS buyers check
Cloud shared responsibility model
Your provider secures the underlying infrastructure; you are responsible for configuration, identity, data, and application security. Most questionnaire gaps sit on your side of that line.
AWS: Shared Responsibility ModelSOC 2 — CC6, CC7, and Availability
Logical access, system operations, and the optional Availability criteria map directly to account design, monitoring, and recovery testing.
AICPA: 2017 Trust Services Criteria (revised points of focus, 2022)GDPR Article 28 and Chapter V transfers
As a processor you need a data processing agreement with each customer and must pass obligations down to sub-processors; transfers outside the EEA need a lawful mechanism such as the Data Privacy Framework or standard contractual clauses.
EUR-Lex: General Data Protection Regulation (EU) 2016/679CCPA service-provider terms
California customers will ask you to contract as a service provider that uses personal information only for the business purpose they engaged you for.
California Attorney General: CCPAAWS Well-Architected SaaS Lens
AWS guidance on tenant isolation, onboarding, and per-tenant metering. Our design documents use its silo, pool, and bridge vocabulary.
AWS Well-Architected: SaaS LensManaged cloud pricing for SaaS
A SaaS company with one product and a single production region usually fits the Professional retainer ($8,000–$15,000 per month); a smaller footprint can start on Essential ($3,500–$7,500 per month). For a cost and security baseline first, the Cloud & DevOps Audit Sprint is $5,000 fixed for 30 days.
Managed cloud questions from SaaS teams
Do you only work on AWS?
No. We work on AWS, Google Cloud, and Azure. We advise against splitting one product across several clouds without a specific reason, because it multiplies the operational surface for little resilience gain.
Where does the infrastructure code live?
In your repositories. The accounts remain in your organization, the Terraform is yours, and our access runs through roles you control and can remove.
What does EU data residency involve in practice?
Customer data, backups, and logs for EU tenants stay in an EU region during normal operation, and support access is controlled and documented. The contracts — DPA, sub-processor list, transfer mechanism — must match what the architecture actually does; we supply the technical description your counsel needs.
Should we offer customer-managed encryption keys?
Only when customers ask and will pay for the complexity. Per-tenant keys complicate pooled data stores and key-loss recovery. For most tenants, provider-managed keys with tight key policies satisfy security questionnaires.
Can you move us off a single account without downtime?
Usually, by building the new account structure alongside the old one and moving services in stages. Databases are the hard part; we plan their cutover around replication and, where needed, a short write freeze.
Review your SaaS cloud foundation
We will go through your account structure, tenant isolation, and recovery setup and tell you which gaps an enterprise reviewer will find first.