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Tenancy is decided once
Shared database, schema-per-tenant or cluster-per-tenant sets your cost, blast radius and residency options. Changing it later is a migration.
ThinkDebug
Practical deep dives on software architecture, AI systems, and scaling digital products - drawn from the work we ship.
Multi-tenant platforms, billing and SSO integrations.
We build multi-tenant products and the enterprise plumbing that lets them be sold upmarket: tenancy and isolation, SSO and provisioning, roles and permissions, billing, and the audit and reporting a security review will ask for.
Most SaaS products are not limited by their features. They are limited by the things a buyer's procurement and security teams ask for - SSO, SCIM, audit logs, data residency, a SOC 2 report - none of which are visible in the product and all of which take real engineering.
The other recurring problem is tenancy decided too early or too casually. Whether tenants share a database, a schema or a cluster determines your cost per customer, your blast radius and whether you can ever offer regional hosting. Changing it later is a migration, not a refactor.
The constraints that shape every build in this sector, and the ones teams usually meet too late.
Shared database, schema-per-tenant or cluster-per-tenant sets your cost, blast radius and residency options. Changing it later is a migration.
SSO, SCIM, audit logs and a security questionnaire block deals far more often than missing product functionality does.
Roles, groups, delegated admin and per-object sharing arrive together with the first large customer, and retrofitting them touches everything.
Seats, usage, annual contracts, mid-term upgrades and proration turn into their own subsystem, and revenue reporting depends on getting it right.
Without limits and isolation, a single customer's bulk import degrades the product for the rest of the base.
One codebase serves every customer, so backwards compatibility and safe migrations are permanent constraints rather than release-time concerns.
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Each one is a system we have built before, not a capability we are willing to try.
Tenancy, isolation and data residency modelled deliberately, with the cost and blast radius understood up front.
SAML and OIDC single sign-on with automated provisioning and deprovisioning.
An authorisation model that survives the first enterprise customer's org chart.
Seats, usage, contracts, proration and upgrades, reconciled with what finance reports.
Audit trails, admin tooling and exports that satisfy a security review rather than requiring one.
Rate limits, quotas and tenant isolation so one customer cannot degrade the rest.
Engagements across sectors - the same team, the same standards.
Partnering with Thinkdebug to develop the Forever 52 mobile app has been a game-changer for us. They were always open to feedback, and it was clear they were as invested in our success as we were. What really sets them apart, though, is the amazing support we've received since the app launched. They’ve made sure the app continues to run smoothly and are always ready to fix any issues that come up.DMDhruv MehtaBusiness Head, Forever 52
Chosen for fit and long-term maintainability, never for novelty.
Send us the scope and we come back with an itemised estimate - no discovery fee, no obligation.
What we design and document against, from the first commit rather than the week before an audit.
Certification itself belongs to your entity and its assessor. What we provide is software built and documented so the assessment is about evidence rather than remediation.
Most of our work comes from clients we already shipped for. These are the reasons they give.
We model isolation, cost per tenant and residency before the first table, because this is the decision that is genuinely expensive to revisit.
SSO, SCIM and audit logging are planned alongside features, so a deal is not lost to a questionnaire you cannot answer.
Roles, groups and per-object sharing are designed once, rather than accreting special cases with every large account.
Usage and seats are metered off a ledger, so invoices, revenue reporting and the product all tell the same story.
Quotas, rate limits and isolation are in from the start, so a bulk import stays the problem of the customer running it.
Backwards-compatible changes and expand-contract migrations, because every customer is on the same codebase at the same time.
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