SaaS Architecture Advisory for No-Code Solution

I need architect advice for a no-code/configurable enterprise SaaS currently under development. It will have multiple modules, with each module purchased separately. Please advise on: 1. Multi-tenancy:... (Budget: ₹600 - ₹1500 INR, Jobs: Architecture, Azure, Cloud Computing, Database Management, Kubernetes, Microservices, SaaS, Security)