An app is not
a platform.
SaaS products and multi-tenant platforms built with the architecture the business model requires.
Most platforms are apps that outgrew their architecture.
Building a web application and building a platform are not the same job. Tenant isolation, permissioning systems, billing infrastructure, usage metering, and admin tooling are not things you add later. When they are bolted on after launch, they cost more and work worse. The companies that scale cleanly are the ones that planned for it before writing the first line.
70%
of SaaS startups that fail cite poor product-market fit caused by building features instead of solving the right architectural problems first
10x
more expensive to rebuild a platform after launch than to architect it correctly from the start, according to engineering cost studies across B2B SaaS products
$4.44M
average cost of a data breach for SaaS companies operating without proper tenant data isolation
Platforms built to scale with the business.
SaaS, marketplaces, developer tools, and internal platforms.
Multi-tenant SaaS Products
B2B SaaS applications where each customer operates in their own isolated environment. Tenant data separation, role-based access, per-tenant configuration, and usage-based billing designed into the architecture from the start, not added after the product ships.
B2B Platforms and Marketplaces
Two-sided and multi-sided platforms connecting buyers, sellers, or service providers. Listing and discovery, transaction management, payouts, reviews, and the admin tooling that keeps operations running at scale.
Internal Platforms and Developer Tooling
Platforms your own teams or developers build on top of. Internal developer portals, shared service platforms, feature flag systems, and tooling that standardizes how engineering teams work across a large organization.
API-first and Integration Platforms
Products where the API is the product. Designed for developers and enterprise buyers who need to integrate with their own systems. Documentation, versioning, rate limiting, authentication, and SDK strategy included from day one.
Architecture first. Product second.
The sequence matters. We do not skip steps.
Design the system before building the product.
Platform Architecture
We define the tenancy model, data isolation strategy, authentication and authorization layers, and infrastructure topology before any product work begins. Billing system design, API surface, and admin tooling requirements are all resolved at this stage. Decisions made here are the ones that are expensive to reverse.
Build the product on the platform foundation.
Core Product Build
The application layer is built on top of the platform architecture decided in phase one. User-facing features, onboarding flows, dashboards, and core product functionality are developed in iterations with working software reviewable throughout. QA runs alongside development.
Billing, analytics, admin, and operational tooling.
Platform Services
Subscription management, usage metering, invoicing, and payment integration are built and tested before launch. Internal admin dashboards, customer health tooling, feature flagging, and support workflows are delivered as part of the product, not as afterthoughts.
Go live with a plan for what comes after.
Launch & Scale
We handle deployment, infrastructure provisioning, and go-live. Load testing and capacity planning are completed before launch, not triggered by a production incident. The roadmap for what gets built next is agreed before the first customer signs on.
We build platforms, not just applications.
The difference shows at scale.
Platform architecture from day one.
Multi-tenancy, permissioning, billing, and admin systems are designed before the product is built, not retrofitted after growth makes them unavoidable. The decisions that are expensive to change later are made correctly the first time.
Built for the B2B buyer.
Enterprise buyers have requirements that consumer products do not: SSO, audit logs, role hierarchies, data residency, and contract-based billing. We build for those requirements from the start so they do not become blockers when the first enterprise deal closes.
Designed to grow without a rewrite.
The architectures we deliver are built to handle growth in tenants, users, and feature complexity without requiring the product to be rebuilt. The engineering cost of scaling is planned for, not discovered after the fact.
Platform architecture from day one.
Multi-tenancy, permissioning, billing, and admin systems are designed before the product is built, not retrofitted after growth makes them unavoidable. The decisions that are expensive to change later are made correctly the first time.
Built for the B2B buyer.
Enterprise buyers have requirements that consumer products do not: SSO, audit logs, role hierarchies, data residency, and contract-based billing. We build for those requirements from the start so they do not become blockers when the first enterprise deal closes.
Designed to grow without a rewrite.
The architectures we deliver are built to handle growth in tenants, users, and feature complexity without requiring the product to be rebuilt. The engineering cost of scaling is planned for, not discovered after the fact.
We came in with a product that had 200 customers and an architecture that could not handle 500. Amorisoft rebuilt the tenancy model and the billing system before touching a single user-facing feature. Eighteen months later we closed our Series A with 1,400 customers on the platform.
CEO
B2B SaaS Company, London, UK
We came in with a product that had 200 customers and an architecture that could not handle 500. Amorisoft rebuilt the tenancy model and the billing system before touching a single user-facing feature. Eighteen months later we closed our Series A with 1,400 customers on the platform.
CEO
B2B SaaS Company, London, UK
Have a platform to build or an existing product to scale?
Bring the brief. One conversation is enough to know whether we are the right fit.