Building a SaaS MVP: Which Features to Keep and Which to Postpone

Building a SaaS MVP: What Should Go Into the First Version?

To build a SaaS MVP, keep only what lets a target user achieve one key outcome: sign up, perform the core action, and see the value they get. Add whatever you need to measure that usage. Everything else can wait.

An MVP is not a cut-price product. It is a learning tool. Its purpose is to test a specific hypothesis with real users, not to cover every use case.

Three principles shape this first version:

• A clear learning goal. What question should the launch answer?
• A tight scope. Every feature must directly serve the key outcome, or the measurement of that outcome.
• Trade-offs you own. Postponing a feature is a documented decision, not an oversight.

The following sections cover what to keep, what to secure from the start, and what can wait for early feedback.

Start from a single problem, not a list of features

Scoping starts with a person and a problem. Not with a screen or a list of features.

Name the user precisely: an accountant at a firm, a logistics manager at a small business. Then describe their problem in one sentence, along with the situation that triggers it.

Turn it into a measurable promise: "A user completes [the core action] in [target time or number of steps] instead of [the current situation]." The numbers should come from your own field research, not from some standard.

If you can't measure the promise, the scoping isn't finished.

Features to keep: the product core

The product core is the shortest path between the user's arrival and their first result. Every step on that path is an essential feature. Every other feature is secondary.

A minimal path usually has four building blocks:

1. A simple entry point: sign-up or invitation, with as few fields as possible.
2. Data entry or import: the user brings their data or context.
3. The core action: the one that delivers the promised value (generating a quote, planning a delivery route, analyzing a file).
4. A visible result: a screen, an export, or a summary that proves it worked.

Test your scope with one question: can a user get their result without this feature? If so, it's out of the MVP.

Also keep usage tracking: key events, time to first result. Without it, you're not measuring anything.

Authentication, roles and data: the foundation not to rush

Secure authentication, role management and data backups from the start. Fixing them after the fact means migrating accounts and permissions that are already in production.

Keep the rest simple: email login, two roles (admin, user), and automated backups that have been tested. Postpone SSO and fine-grained permissions.

When should you add payments and billing?

Built-in payments make sense when you need to prove that users will pay, on their own and repeatedly. Otherwise, they can wait.

• Pre-sales: a commitment or deposit proves intent, but not usage.
• Manual invoicing: a simple quote and invoice are enough for the first customers. It doesn't scale beyond a few accounts.
• Built-in payments: they measure real conversion, but add effort and obligations.

Features to postpone until after your first users

These secondary features are tempting, but they don't help validate your hypothesis:

• Advanced dashboards: a simple export or a few key figures are enough at first.
• Multiple integrations: start with the most requested one, or with a manual import.
• Extensive customization: without usage feedback, you don't know what to make configurable.
• Mobile app: a responsive website often covers the initial need.
• Complex notifications: one essential email is enough in place of a rules engine.

The criterion is simple: the feature isn't necessary to achieve or measure the key outcome.

That doesn't mean you should forget them. Record them in the roadmap, with the reason for the delay and the signal that would trigger their development, such as repeated requests from active users.

A prioritization grid to make decisions without endless debate

Score each feature on four criteria, from 1 to 3:

• Impact on value: does it serve the key outcome?
• Effort: design, development, testing.
• Risk: technical, legal, adoption.
• Dependencies: does it block other elements?

Then place each line in an impact-effort matrix. High impact, low effort: keep it. Low impact, high effort: postpone it.

Scope creep mostly comes from three scoping mistakes: making trade-offs without a learning goal, piling up "small additions," and letting the loudest voice decide.

After launch: measure to decide what comes next

Track a few metrics, but set them before launch.

• Activation: how many sign-ups reach their first result?
• Core action: how often is it repeated?
• Retention: do users come back?

A sticking point calls for an adjustment. Repeated use justifies adding more. A feature that gets ignored gets removed. Set your thresholds based on your own context.