We will tell you when to buy instead
General ledger, payroll, statutory tax filing and standard procurement are solved problems governed by rules you do not control. Executing them differently from your competitors gains you nothing, and established vendors have absorbed decades of regulatory edge cases you will not anticipate. Building there is a category error, and we say so.
The case for building is specific: where your workflow is your differentiation — a lender's underwriting logic, a manufacturer's yield-optimising scheduling, a logistics operator's routing. The tell is heavy customisation of a single module. If eighty percent of a package fits and one module must be rebuilt, you are not buying software; you are buying a constraint and paying consultants to work around it.
The composite architecture most mature organisations land on
Framing this as build-or-buy is itself the common mistake. The durable answer for most mid-to-large organisations is: license a proven package for commodity back-office functions and keep it close to vanilla; build custom services for the two or three workflows that constitute the advantage; and integrate through a deliberate API layer rather than direct database access.
That integration layer is what buys you the option to change your mind later, and it is the piece most often cut under delivery pressure. Cutting it is how organisations end up unable to replace either system.
Multi-tenancy decisions that are expensive to reverse
For SaaS platforms, tenant isolation strategy is close to irreversible. Shared-schema with a tenant discriminator is cheapest to operate and hardest to satisfy an enterprise security review with. Schema-per-tenant sits in between. Database-per-tenant satisfies the review and complicates every migration you will ever run.
There is no universally right answer, but there is a wrong process: picking by default and discovering the constraint when your first regulated customer sends a security questionnaire. We make the choice explicitly against your actual buyer profile, and write down the reasoning so the next team understands it.
What is included
- Custom ERP design and development
- Custom CRM and sales operations platforms
- Multi-tenant SaaS architecture and tenant isolation design
- Legacy system modernisation via strangler-pattern migration
- Enterprise application integration and API layer design
- Workflow and business process automation
- Reporting, analytics and data warehouse integration
- Role-based access control designed to survive an audit
- Build-versus-buy assessment before commitment
Technologies and standards
Related case studies
- Manufacturing ERP Where Scheduling Was the Competitive Edge — Packaged software for the commodity back office, custom engineering for the scheduling logic that differentiated the business, connected by a deliberate API layer.
- CRM With ML Lead Scoring Kept Off the Decision Path — Machine learning applied where being right most of the time is valuable and being wrong is recoverable — prioritisation, not adjudication.