Question 1

How is tenant isolation guaranteed?

Accepted Answer

Filtering is never left to application code. Isolation is enforced in the database with row-level security policies: the rule is written once and every query must obey it. A single forgotten condition exposing one customer's data to another is the worst failure a SaaS can have.

Question 2

Do you build the billing system from scratch?

Accepted Answer

No. Subscription management is more intricate than it looks: trials, plan changes, proration, failed payments, cancellation, refunds. We use mature providers for that. In Turkey, e-invoice integration and VAT handling are part of the work too.

Question 3

What can wait for a later release?

Accepted Answer

Admin panels, granular permissions, multiple languages, a public API and detailed reporting. What cannot wait: tenant isolation, backups, baseline security and measurement — retrofitting those multiplies their cost.

Question 4

Can our own team take it over later?

Accepted Answer

Yes — handover is designed for it. Standard React + TypeScript, documented infrastructure decisions, a transfer session and documentation included. You own the source code and the infrastructure accounts.

SaaS Product Development