The same five stages, different weighting
SaaS development still follows Discovery, Design, Development, Testing, and Launch — see Software Development Process Explained for the general version. What's different is where the weight falls.
Discovery: validating the business model, not just the feature set
For SaaS, discovery needs to answer a business question alongside the technical one — who's the customer, what will they pay, and what does the pricing model look like — not just "what should the software do." Getting this wrong doesn't just mean rework; it means building the wrong product entirely.
Design: architecture gets disproportionate weight
Multi-tenancy strategy, data isolation approach, and how billing integrates with the data model are decisions made here that are genuinely expensive to change later — unlike most application features, which can be iterated on freely post-launch. See SaaS Architecture Fundamentals for what needs deciding at this stage specifically.
Development: building for the MVP, not the eventual roadmap
See SaaS MVP Development for how scope gets deliberately narrowed here — this is where over-building most commonly happens if it's not actively guarded against.
Testing: multi-tenant edge cases matter more
Beyond standard functional testing, SaaS products need explicit testing for tenant data isolation, billing edge cases, and behavior under multiple simultaneous users — failure modes that don't exist in a single-tenant application.
Launch: the process doesn't really end
Unlike a marketing site or a one-off internal tool, a SaaS product's "launch" is the start of a continuous cycle — new customers, evolving requirements, and ongoing infrastructure attention as usage grows. Budget for this as an ongoing relationship with your development partner, not a one-time delivery.
How we run this
See the process applied to a real multi-tenant platform in the Samvid-OS case study, or the general framework on our Web Engineering page.
Start the discovery conversation
Tell us about your SaaS idea and we'll walk you through how discovery works for a product like yours specifically.