SaaS MVP Development

What the MVP has to prove, and who it is for

A first SaaS release is not a mock-up or a demo. Its job is to answer three questions: do the right customers sign up, do they reach the moment where the product gives them value, and do they pay? Anything that does not help answer those questions moves to a later phase.

• Founders with a validated problem (customer interviews, a waitlist, letters of intent) who need a product to sell rather than another pitch deck.
• Service companies turning a repeatable service or internal tool into a subscription product.
• Product teams inside larger organisations testing a new business line without tying up the core IT department.

If the problem has not been confirmed in conversations with customers, a clickable prototype and a handful of interviews are a more honest starting point than a full MVP.

Typical SaaS MVP modules

Organisations, users and roles

Company sign-up, team invitations, owner, admin and member roles, transfer of account ownership, and offboarding when someone leaves the customer's company.

Onboarding and account lifecycle

Email verification, a first-run checklist, sample data, nudges for inactive accounts, suspension for non-payment and deletion of the account and its data on request.

Core workflow and notifications

The one path a customer buys the product for, from data input to a result, report or action, plus email and in-app notifications that bring users back.

Plans and usage limits

Trials, monthly and annual plans, limits on seats, projects or operations, prorated plan changes and warnings as a limit approaches.

Support console

Organisation search, subscription status, logged and controlled access to a customer account, manual trial extensions and data export.

Product analytics

Activation and retention events defined in the specification, a funnel from sign-up to payment and a simple recurring-revenue view.

What usually stays out of version one

The most common MVP mistake is building for customers you do not have yet. We defer the following unless your market clearly demands them from the start:

• native mobile apps, because a responsive web app is usually enough;
• advanced reports and a custom dashboard builder;
• a catalogue of integrations, replaced by one key integration and webhooks;
• multiple languages and currencies if you launch in a single market;
• SAML SSO and field-level permission matrices until you sell to large enterprises.

Architecture and technology

We recommend a modular monolith: one application with clear module boundaries, a shared PostgreSQL database and an organisation identifier on every record. It is cheap to run, simple to deploy and does not block splitting out services later. Background work such as emails, imports and billing runs through a job queue, and new features are switched on for selected customers with feature flags.

• Frontend: React with Next.js, or Vue with Nuxt.
• Backend: Node.js, .NET, Python or PHP, depending on who will develop the product after launch.
• Authentication: a built-in module, or an identity service (for example Auth0, Amazon Cognito or Keycloak) when SSO is needed.
• Payments: Stripe Billing, Paddle or a local provider; transactional email through a dedicated delivery service.
• Infrastructure: managed cloud services in an EU or US region, separate staging and production environments, CI/CD.

No-code tools work well for a prototype, but for a product core with subscriptions, permissions and customer data they tend to become a constraint quickly.

Security and compliance from the first customer

• Tenant isolation covered by automated tests: a user from one company cannot read or change another company's data, including through the API.
• Account recovery with attempt limits, expiring links and optional MFA.
• Audit log for sign-ins, role changes, payments and support-team actions.
• Hosted payment pages, so card data never reaches your servers, which narrows PCI DSS scope; strong customer authentication under PSD2 is handled by the payment provider.
• GDPR: organisation-level export and deletion, a sub-processor list and consent for analytics cookies where required.

From idea to first paying customers

1. Discovery: target customer, core workflow, pricing hypothesis, success metric and exclusion list.
2. Specification with data model, roles, acceptance criteria and integration plan.
3. UX design of the path from sign-up to first result and the billing screens.
4. Iterative build with a demo after each iteration.
5. Testing of the core workflow, tenant isolation and payment scenarios: renewal, declined card, plan change, cancellation.
6. Private beta with a few customers, then public launch.
7. Ongoing development driven by analytics and user conversations.

A focused MVP is typically measured in weeks to a few months. The main things that stretch the timeline are extra roles, integrations with external systems, content and data that are not ready, and decisions delayed on the client side.

What drives the cost of an MVP

The indicative floor is $8,900 for an MVP with one core workflow, email login, subscriptions through the provider's hosted checkout and a basic admin console. Proposals come in three options:

• Essential: core workflow, one user role besides admin, plans and payments, support console;
• Recommended: adds teams and roles, usage limits, checklist onboarding and activation analytics;
• Scale: adds enterprise SSO, a public API with webhooks, multiple languages and audit export.

Cost depends on the number of roles and screens, the complexity of billing rules, integrations, data migration from an existing tool and your customers' security demands. Payment provider fees, email services, cloud usage and licences are paid by you directly. All price anchors are compared on our pricing page.

What the client provides

• A description of the target customer and problem, plus interview notes if you have them.
• A pricing hypothesis: plans, limits and trial length.
• Brand identity, domain and copy for public pages.
• Terms of service, privacy policy and data processing agreement prepared by your lawyer.
• Payment provider, cloud and email accounts registered to your company.
• A decision-maker available for demos, and a few customers for the beta.

After launch we can take over software maintenance and development from $249/month. If you plan to sell through partners under their own brand too, see white-label platforms. Invoicing logic can be extended through our invoice and billing software service, and products without a subscription model are covered under web application development. Other services are listed in the SaaS and white-label category, and you can send a short description of your idea via the contact page.

Related services

Frequently asked questions