An MVP should be small but coherent
The first version does not need the entire roadmap, but tenant boundaries, data ownership and core contracts should not be temporary.
Fewer capabilities with clear boundaries are safer than a broad feature list with heavy coupling.
Multi-tenancy from day one
If the product is multi-tenant, TenantId enforcement, query filters, unique indexes and isolation tests belong in the initial architecture.
Financial snapshots
Store price, tax, commission and final totals as transaction snapshots so later rule changes do not rewrite historical reporting.
Background jobs and audit logs
Email, reporting and integrations should leave the request path. Audit logs matter early for roles, settings, billing and sensitive operations.
What can wait
Microservices, multiple databases, complex event streaming and unlimited customization are rarely MVP requirements. A clean modular monolith is often the stronger beginning.
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