Non-functional requirements define the quality attributes of your SaaS: reliability, compliance, usability, and cost efficiency. This chapter explains white labelling, legal compliance, DR drills, region-wise deployment, caching, validations, archiving, health checks, alerts, incident reporting, SLAs, support portals, and cost optimization strategies. Applied examples show how to evolve your Todo List SaaS from MVP into an enterprise-ready platform with strong guarantees and efficient resource usage.

1. White Labelling

Best Practices

• Configurable themes per tenant.
• Custom domains with SSL.
• Tenant-specific email templates.

Todo List SaaS Setup

• MVP: Basic theme toggle.
• Growth: Tenant-specific branding.
• Enterprise: Full white-labelling with custom domains + SSL.

2. Legal & Compliance

Best Practices

• Terms of Service, Privacy Policy.
• GDPR/India DPDP compliance.
• PCI DSS if payments involved.
• SOC 2 readiness for enterprise.

Todo List SaaS Setup

• MVP: Basic ToS + Privacy Policy.