Early SaaS products usually fail from preventable mistakes: unclear target user, oversized scope, weak onboarding, poor analytics, and unstable release processes.
Most of these are planning failures, not coding failures. If the first user flow is unclear, adding features will not fix retention.
Focus on one clear user segment, one measurable activation event, and one stable release cycle. Keep everything else secondary.
SaaS success comes from learning loops. Ship fast, measure behavior, and improve weekly.