When it is a good fit
SaaS suits a repeatable need across multiple organisations or users. Focus the first version on a clear audience and problem.
OXIAE / SOFTWARE DEVELOPMENT
SaaS development.
Turn your SaaS idea into a product that can serve multiple customers.
Discuss your projectUNDERSTAND THE SERVICE
What does developing a SaaS platform require?
SaaS delivers software as a service to multiple customers. Besides product features, customer isolation, user management, operations and subscriptions matter. Oxiae starts with the first users' problem and defines the functions needed to deliver that value.
When to take a different approach
Many exceptions for one customer may indicate a custom project instead. Building before testing the core problem can generate development work without useful adoption.
PRACTICAL DECISION GUIDE
SaaS development needs customer isolation from the start
In SaaS, customers often share application and infrastructure components. Authentication alone does not prevent data from crossing organizational boundaries. I design how tenant context travels through APIs, databases, background jobs and files, and where it is technically enforced. [1]
Alongside product features, we define onboarding, subscription access, administration and customer departure. Costs and load are attributable by customer where needed. Multi-organization tests also cover exports, search and background jobs, where a missing customer boundary can be less obvious. [2][3]
Questions to settle first
- Where is tenant context checked beyond visible screens?
- How does a departing customer export or remove their information?
Make acceptance measurable
- Cross-tenant isolation tests for reading, editing, search and export.
- Documented onboarding and departure paths with administrative procedures.
Compare your options
Choose based on the task, the people involved and what you can maintain.
| Approach | Useful when | What to consider |
|---|---|---|
| Clickable prototype | Discuss the concept and user flow. | Does not establish working technology or operations. |
| SaaS MVP | Early customers need to use the core function. | Requires explicit scope exclusions. |
| Further development | Usage and feedback identify next priorities. | New features must coexist with supporting existing customers. |
What I need to start
- A first audience and core function.
- Customer isolation and user permission design.
- Onboarding, support and data lifecycle agreements.
How to assess the result
- Customers cannot access other customer environments.
- Onboarding and the primary task work end to end.
- Operators can investigate errors without uncontrolled data access.
SCOPE & INVESTMENT
What determines the cost?
A useful estimate starts with the scope. I distinguish development work from recurring usage and operating costs. These are the main drivers:
- Product scope and role model.
- Billing, integrations and migration needs.
- Support, infrastructure and ongoing development.
APPLICATION AND SCOPE
Your challenge.
A practical application.
Illustrative scenario; not a published client case.
You want to deliver a repeatable service through software.
SaaS involves customer separation, subscriptions and maintenance as well as the user-facing function. An MVP can test the most important product assumption first. A software architect can then work through the requirements for multiple customers, permissions and further development together.
THE QUESTION I ASK FIRST
What is the core value for your first paying users?
Agree the first step
Use the prerequisites, acceptance checks and cost factors above to define your assignment. Agree who can approve the outcome and who will maintain the solution. The project approach explains discovery, delivery and handover.
Read the project approachQUESTIONS ABOUT THIS SERVICE
Your questions.
Clear answers.
Must the first version support every subscription option?
No. Start with what early users need. Each variant adds logic, exceptions and tests, while later expansion should remain possible to discuss.
How does a SaaS MVP differ from a demo?
A demo illustrates a concept. An MVP is used by real users and must handle their data, permissions, errors and support needs.
Sources and technical basis
These primary sources explain the technical principles behind this guide. The project recommendations are OXIAE’s interpretation; they do not imply endorsement by the publishers. Product documentation applies to the named platform.
- SaaS Tenant Isolation StrategiesAmazon Web Services
Design choices for isolating SaaS customer resources.
Link and relevance checked: - OWASP Top 10 API Security Risks – 2023OWASP
API risks involving object authorization and resource consumption.
Link and relevance checked: - Secure Software Development Framework, SP 800-218NIST
Security practices for development and ongoing changes.
Link and relevance checked:
YOUR NEXT STEP
Prepare your project conversation.
Exploring SaaS development? Use the project checklist to describe your task, systems and intended outcome. Collect open questions and download a brief for your conversation.
Create your project brief