A Defined Product Model
Clarify who the software serves, what users can accomplish and how the product will operate as an ongoing offering.

Turn your expertise into a subscription product that delivers value from the first interaction. WDI helps you design and build SaaS platforms with intuitive onboarding, useful workflows, and an architecture that supports your product’s growth.

The software needs to support repeated customer use and continued product operation.
Clarify who the software serves, what users can accomplish and how the product will operate as an ongoing offering.
Define relationships between individual users, teams, organisations and other account types required by the product.
Design the journeys customers return to, with functionality organised around recurring product tasks.
Provide appropriate ways for the operating team to manage users, information, configuration and agreed operational requirements.
Plan the APIs and integrations needed by the product model and its user journeys.
Connect the first release with a roadmap that can be reviewed as user and operating requirements develop.
Clarify the proposition, users, core workflows and operating model before engineering scope is fixed.
WDI translates these requirements into roles, journeys, dependencies and release priorities.
Best suited for: Teams moving from a concept or broad specification to a defined product.
Design recurring-use experiences for customers and administrators.
The scope considers onboarding, navigation, account interactions and the tasks each role needs to complete.
Best suited for: Products where repeated workflows need coherent user experiences.
Engineer the application around the agreed design, business rules and architecture.
Work may include frontend and backend development, APIs, roles, administration and supporting functionality.
Best suited for: Teams ready to implement a defined SaaS product scope.
Define how customers, teams and product administrators access and manage the software.
Implementation follows the account relationships, responsibilities and permissions required by the product.
Best suited for: Products with multiple user types or operational roles.
WDI provides SaaS platform engineering, backend and API development, and integration work within its broader custom-software capability.
The scope depends on product workflows, systems and operating requirements.
Best suited for: SaaS products connected to existing business systems or external services.
Test user journeys, functionality, roles and integrations against agreed acceptance criteria.
Release planning also addresses administration, documentation and operational ownership.
Best suited for: Teams preparing an initial launch or significant product phase.
The specification should describe how the product operates, not only which features appear on screen.
Who uses the software and what they need to accomplish
Relationships between users, teams and organisations
Tasks central to recurring product use
What each user group may view, manage or change
How the product team manages information and settings
Information created, stored, retrieved or updated
Systems and services required by the product
Capabilities needed for the first meaningful release
Known future requirements influencing current decisions
WDI uses the product model to guide architecture. Account and administration requirements should be understood before technical patterns are selected.
The distinction follows the primary requirement. A browser interface alone does not determine whether the project is SaaS.
A SaaS engagement focuses on the software’s ongoing product model. General Web Application Development is the broader route for portals, workflow applications and operational systems.
This review connects the customer-facing software with the work needed to operate it.
The value the software is intended to provide
Who uses the product and how relationships work
Tasks central to repeated use
Different access and responsibility requirements
How the product is managed internally
APIs, platforms and information sources involved
Services required by important workflows
The first meaningful product scope
Future needs affecting present decisions
Responsibility for operations and development
A feature’s place in the roadmap is considered alongside its account, information and administration requirements.
Clarify target users, product value proposition, operating model, core workflows and the problem the SaaS product is intended to solve.
Clarify users, proposition, operating model and core workflows.
Define user roles, account structures, subscription requirements, permissions, administration features and priorities for the first release.
Define roles, accounts, functionality, administration and release priorities.
Design onboarding, dashboards, account settings and customer workflows that make recurring product tasks straightforward for users and administrators.
Create customer and administrative journeys around repeated product tasks.
Plan application architecture, database design, APIs, authentication, tenant isolation, data flows and integrations according to product requirements.
Define frontend, backend, APIs, data flows and dependencies.
Build the application’s core features, account management, subscription functionality and required integrations within the agreed release scope.
Engineer the agreed application and connect supporting systems.
Test user journeys, role-based permissions, subscription flows, data handling, integrations and expected application behaviour against acceptance criteria.
Validate roles, user journeys, administration and integrations against acceptance criteria.
Where continued development is included, use customer feedback, product usage and operational requirements to prioritise improvements and plan subsequent releases.
Where continued development is included, review feedback and operational requirements to prioritise later releases.
A fraction of what we have shipped.
The first release should establish a coherent product that can be operated and reviewed. Known future requirements matter, but they do not all need to be implemented immediately.
Decisions about accounts, information relationships and administration can influence later functionality. WDI considers those dependencies when separating initial scope from future releases.
Connects engineering with the intended offering
Defines access and administration responsibilities
Keeps known future requirements visible
Coordinates interfaces, backends and APIs
Establishes what the initial product must accomplish
Supports documentation and later development
Ongoing development and support are defined by the engagement rather than assumed to be included indefinitely.
Look for a team that understands the product model as well as the software.
A SaaS product development company should be able to explain how the proposition affects scope, how account relationships work and how customers and administrators use the product.
Discuss Your SaaS ProductSaaS focuses on an ongoing software-product model. Users, accounts, administration, operations and continued development are central. Web Application Development is broader and includes custom browser software for customer, internal or operational workflows.
WDI's custom-software capability includes SaaS platforms, backends and APIs. The individual scope defines customer interfaces, administration, application logic and integrations.
Discovery and solution definition can clarify the proposition, users, workflows, account requirements and release priorities. Roadmaps and prototyping may form part of the agreed work before implementation.
Role-specific access and experiences can be included where they are part of the product requirements. Planning should define what each group can access, manage or complete and how those responsibilities relate to administration.
Integration depends on suitable APIs, access and supporting architecture. WDI reviews required information flows and system dependencies before the scope is agreed.
The architecture should follow the product and operating model. User and organisation relationships, isolation requirements, information structures and administration need to be understood before the implementation approach is selected.
The timeline depends on workflows, accounts, roles, design, application logic, integrations, administration and release scope. A reliable estimate follows product discovery and scope definition.
Share your idea or existing product, intended users, account model, core workflows, administration needs and known integrations.
WDI will review the proposition, first-release priorities and technical dependencies to help define the next step. This may involve product discovery, SaaS scope definition, experience design, architecture assessment or implementation planning.