SaaS Platform Development: A Technical Guide for Businesses in Noida & Delhi NCR

The core architectural decision: multi-tenancy model

The first and most consequential decision in SaaS platform development is how you isolate data between customers (tenants). There are three models:

• Shared database, shared schema — all tenants in one database, distinguished by a tenant_id column. Cheapest to operate, lowest isolation. Suitable for low-sensitivity data, small to mid-scale.
• Shared database, separate schemas — one database, but each tenant gets their own schema namespace. Better isolation, more manageable at scale. Our default recommendation for most B2B SaaS builds.
• Separate database per tenant — full data isolation, simplest compliance story, but most expensive to operate. Required for healthcare, legal and financial SaaS where data residency matters.

Marketing Wise recommends the shared-database, separate-schema model for most SaaS platforms we build — it gives you clean tenant isolation, simple backup and restore per customer, and a manageable operational footprint on PostgreSQL hosted on AWS RDS or GCP Cloud SQL.

Authentication and access control

A SaaS platform requires multi-level authentication: platform admin (your team), tenant admin (your customer's team lead), and tenant end-users. We implement this with JWT-based authentication, OAuth 2.0 for social/SSO login where required, and role-based access control (RBAC) that is configurable per tenant. Every session is scoped to a tenant — a user from tenant A cannot access tenant B's data under any circumstance.

Subscription billing integration

For Indian SaaS businesses, we integrate Razorpay Subscriptions as the default billing layer — it supports INR, UPI, credit cards and net banking, and handles recurring billing, plan upgrades, downgrades, proration and failed payment retries natively. For international customers or USD billing, we integrate Stripe. The billing integration connects to your platform's plan management system so that feature access is automatically gated by the customer's active subscription tier.

The onboarding flow

SaaS churn is highest in the first 30 days. The onboarding flow — the sequence of steps that takes a new customer from signup to first meaningful value — is a product design problem, not just a UI problem. We design onboarding flows that: provision the customer's tenant workspace automatically, walk through required configuration steps, import or migrate existing data where possible, and send timed email and WhatsApp sequences (via AWS SES and WhatsApp Business API) to guide the customer toward activation.

Infrastructure and scaling

We deploy SaaS platforms on AWS or GCP with: auto-scaling application servers behind a load balancer, managed PostgreSQL with read replicas, Redis for session management and caching, CDN delivery via CloudFront or Cloud CDN for static assets, and GitHub Actions CI/CD pipelines that deploy to staging on every pull request and to production on merge. The infrastructure is defined as code (Terraform or Pulumi) so it is reproducible and auditable.

Timeline and cost for SaaS development in Noida

An MVP SaaS platform — multi-tenancy, subscription billing, 3–5 core features, basic admin portal — typically takes 16–24 weeks and costs between ₹3,00,000 and ₹6,00,000 at Marketing Wise. A full-featured platform with marketplace mechanics, AI features, complex reporting and mobile apps runs 24–40 weeks and ₹6,00,000–₹15,00,000+. These are fixed-price engagements with a written timeline before work begins.

If you are planning a SaaS platform and want an architecture review before committing to a build, call Marketing Wise at +91-95-602-919-70. We will map the architecture, identify the right tenancy model, and give you a realistic scope estimate on a 30-minute call.