Building software as a service means committing to operate it, which is a different business from delivering a project. The features are the visible part; tenancy, billing, onboarding, support tooling and uptime are what determine whether the product is viable, and they are what inexperienced bidders leave out of a quote.
Multi tenancy is the decision SaaS platform developers make once
How customers are isolated from one another, shared database with tenant scoping, separate schemas, or separate databases, determines your cost per customer, your ability to meet enterprise security requirements, and how hard it is to move a customer or restore one without touching the others. It is expensive to change later. Ask a bidder which model it proposes and why, and what happens when one customer asks for data residency in a particular jurisdiction.
For SaaS development companies, billing is harder than the product for a while
Trials, plan changes mid period, proration, seats added and removed, usage based components, failed payments, dunning, tax in multiple jurisdictions, refunds and invoices that accounting will accept. This is genuinely large and is routinely quoted as an integration. Use a billing provider rather than building it, keep card data out of your systems with tokenisation so the PCI Data Security Standard applies narrowly, and require the plan change and proration behaviour to be specified before the build.
What makes a SaaS application development company's product operable
Support tooling so someone can see a customer's state without a database query. Audit logs so you can answer what happened. A way to impersonate a user safely, with consent and logging, because you will need it. Feature flags so a change can be enabled for one customer. Usage metrics so you know what people actually use. None of these are features customers ask for and all of them decide whether the company can support the product.
Security expectations a SaaS product development company must plan for
Enterprise buyers ask for single sign on, role based access, audit export, an incident process and often a security questionnaire, and those are far cheaper designed in than retrofitted under sales pressure. The elements at 16 CFR 314.4 and the structure of the NIST Cybersecurity Framework are both reasonable references for what to build towards. Ask bidders which of these they have implemented before rather than whether they could.
Questions people ask about saas app development company
What should we ask a SaaS development company first?
Which multi tenancy model it proposes and why, and what happens when a customer requires data residency in a particular jurisdiction. That decision sets your cost per customer and your ability to meet enterprise requirements, and it is expensive to change.
Should we build our own billing?
No. Trials, proration, seat changes, usage components, dunning, multi jurisdiction tax and acceptable invoices are a large build. Use a provider, keep card data out of your systems with tokenisation, and specify plan change behaviour before the build.
What do SaaS developers leave out of their quotes?
Operability: support tooling, audit logs, safe logged impersonation, feature flags and usage metrics. Customers never ask for them and they decide whether you can actually run the product.