Practice 03 · Web, software & digital solutionsSaaS platform development: from internal tool to product
You built a tool for your own business, peers are asking to use it, and you are considering selling it by subscription. Between a tool that works for one company and a product that serves dozens of customers, everything changes: data separation, billing, self-service sign-up, support, availability. SaaS platform development is the work of building that transition.
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Who it is for, and whenWhen to consider building a SaaS platform
SaaS is a business model as much as an architecture.
- An internal application has proved its worth and comparable companies are ready to pay for access to it.
- You offer a service currently delivered by hand (analyses, reports, matchmaking) and want to make it available on a self-service basis.
- You have a software product idea, a first market identified, and you are looking for a team able to deliver a first sellable version and then develop it further.
- Your existing product was built for a single customer and each new one requires a separate installation, impossible to maintain at scale.
The scopeWhat SaaS platform development with Kopus covers
- Multi-tenant architecture Isolation of each customer’s data, management of organisations, users and their roles.
- Sign-up and onboarding Self-service account creation, trial period, guided first steps, initial data import.
- Plans and billing Offers, quotas, recurring payment through a provider (for example Stripe), invoices, handling of failed payments and plan changes.
- Security Strong authentication, encryption, audit logs, environment separation, backup and restore procedures.
- Scalability Infrastructure able to absorb growth in customer numbers without a rewrite, plus monitoring and alerts.
- Internal administration A console for your team (support, feature activation, account lookup).
- A public API and webhooks when your customers need to connect the product to their own tools.
- A continuous delivery pipeline Zero-downtime updates, automated tests, progressive rollouts.
- A release roadmap What the first sellable version contains, and what comes next.
What you get
- A reliable, secure platform ready to bill.
- A product that learns from its first users.
- A technical foundation able to grow with your customer base.
Multi-tenant architectureOne shared platform, walled-off data
All your customers run the same version of the code and the same shared services: a fix or a new feature ships once, for everyone. Their data, on the other hand, stays separated by organisation, and every request is filtered accordingly. It is often the first assurance your customers ask for before they subscribe.
Your customers
- Organisation ATrial
- Organisation BPro
- Organisation CEnterprise
Shared platformOne version of the code, deployed for everyone
- Authentication and SSO
- Subscriptions and recurring billing
- Administration
- Public API and webhooks
- Onboarding
Continuous delivery · monitoring · backups
- Data A
- Data B
- Data C
Data isolated per organisation
The methodHow a SaaS platform is built at Kopus
Defining the sellable product
With you, we draw the minimum scope a customer would pay for, the pricing plans under consideration and the service commitments you can keep.
Multi-tenant architecture design
Data model, isolation, account and permission management, hosting choices compatible with growth.
Building the foundation
Authentication, billing, administration and the first business modules, on an automated deployment pipeline from the start.
Pilot customers
A few real customers use the product, their feedback shapes the next versions, support procedures take form.
Launch and operation
Commercial opening, monitoring, a regular release cycle, tracking of usage and churn indicators.
Our positionWhat we stand for in SaaS
A SaaS product is sold once and delivered every day. Each update reaches all your customers at the same time, and a regression on a feature used by dozens of companies instantly becomes a support and reputation problem. The platform must therefore be designed to evolve without destabilising existing usage: automated tests, progressive deployments, API compatibility, the ability to roll back. That upfront investment in tooling looks heavy; it is what makes a sustained release pace possible.
Your questionsFrequently asked questions about this service
What is a SaaS platform?
Hosted software used online by many customers and sold as a service, usually by subscription, with maintenance, security and new releases handled by the publisher.
Can an existing application be turned into SaaS?
Often, but rarely without rework: separating data between customers, billing and self-service sign-up all require architectural changes. A preliminary study measures what can be reused.
Who runs the platform once it is live?
You can bring operations in-house or entrust them to us under an application maintenance agreement. Either way, monitoring, backups and incident procedures are defined before commercial launch.
Can you take over a SaaS built by another provider?
Yes. We start with an honest technical audit, then propose either a progressive takeover or a rebuild, depending on the state of the code and your goals.
How do you handle security and data?
Encryption, backups, access management, logging and GDPR compliance are part of the foundation, not options. We document everything for the customers who ask.
How much does SaaS development cost?
A first sellable version often represents several months of development. Kopus splits it into batches and helps you sell early, to fund what follows with real customers.
How do you handle billing and subscriptions?
By integrating a proven recurring-payment solution, with trials, plan changes, invoices and automatic reminders, rather than a fragile in-house build.
Go furtherPages related to this service
Our workProjects built on this expertise
All our work
Let’s bring your projects to lifeYour next project starts here.
Let’s build your SaaS product, from the first sellable version through to day-to-day operation.
A 30-minute conversation, confidential