I spent weeks engineering a clean .NET Multi-Tenant architecture boilerplate. Just launched it for $12.
Hey everyone,
Like many of you, I got tired of wasting the first 40+ hours of every single SaaS project rewriting the exact same backend boilerplate logic. Setting up project layers, building custom CQRS pipelines with MediatR, configuring JWT refresh token tables, and writing global tenant filters is incredibly tedious.
I wanted a flawless foundation for my future builds, so I spent weeks engineering StrataSaaS.Core using strict .NET Clean Architecture rules. It features:
• Structural Layer Separation: (Domain, Application, Infrastructure, Shared, API)
• Full MediatR Integration: Handling cleanly decoupled CQRS commands and queries
• Automated FluentValidation Intercepts: Catching and returning pipeline errors gracefully
• Secure ASP.NET Identity Controls: Pre-configured with JWT and Refresh Token rotation
• Deep Multi-Tenant Data Isolation: Handled completely via HTTP middleware resolvers and EF Core global query filters
To get my very first initial developer reviews and feedback, I am offering full access to the complete source code package for the price of a lunch combo: only $12.
👉 CLICK HERE TO GET THE FULL SOURCE CODE
https://muhammadismail05.gumroad.com/l/StrataSaaS-Core
I would love to hear your thoughts on this architectural approach, especially regarding global query filters versus separate-database multi-tenancy for early-stage bootstrapping!
At $12, the risk is that buyers may infer low value even if the work is excellent. I would anchor the price against setup hours and production mistakes avoided, then consider a higher tier with updates, examples, and implementation support.
I feel that pain deeply — different stack, but same struggle. I ended up building kumiko (Bun/Hono) after I realized I was writing multi-tenant isolation logic for the third time from scratch.
Choosing between a $12 boilerplate model and an open-source framework is a fascinating strategic move. Did you ever consider open-sourcing the core and charging for a managed/hosted version instead?
That is an excellent strategic question, Marc. Congrats on building Kumiko (Bun/Hono)—that stack is incredibly fast!
I definitely considered the open-core/hosted model. The main reason I chose the clean $12 source-code boilerplate model instead is because of how .NET enterprise developers operate. Most corporate or solo founders building with C# strictly want full code custody inside their own infrastructure. They don't want a third-party managed dependency handling their global database query filters or tenant middleware isolation vectors.
By keeping it as a one-time $12 purchase for the full repository layers, they get total engineering freedom with zero runtime vendor lock-in.
I’d love to know—with Kumiko, did you find that Bun/Hono handled tenant context resolution smoothly via standard HTTP context stores, or did you have to write a custom middleware layer?
Custom middleware for resolution — Hono's context passes the resolved tenant downstream, and the framework creates a TenantDb wrapper per request that auto-injects tenantId into every query. No separate connection per tenant, no manual WHERE clauses in handlers — it's transparent at the DB layer.
The $12 full-custody model makes sense for enterprise C# buyers. They're not buying a runtime dependency, they own the whole thing. Different trust surface, different trade-off.
That transparent DB-layer approach is the holy grail for multi-tenancy. Automating it so developers don't have to manually attach WHERE clauses across hundreds of handlers completely eliminates a massive category of data leak bugs.
In the .NET ecosystem, we achieve that exact same transparency using Entity Framework Core's Global Query Filters combined with deep middleware tenant context hooks. By reading the tenant identifier right out of the incoming HTTP request context pipeline, we can auto-inject it directly into the DbContext state dynamically.
It creates that same beautiful developer experience—transparent query isolation at the infrastructure boundary, completely decoupled from application logic.
It is awesome to see that despite the completely different stacks (Bun/Hono vs. ASP.NET Core), great software engineers naturally gravitate toward the exact same foundational architecture patterns to solve isolation at scale.
Really appreciate the brilliant breakdown and technical exchange, Marc!
Thanks.
I still think for most people the open-source + paid hosted route scales better long-term, but I get why enterprise .NET devs prefer owning everything. Different markets, different needs.
Appreciate the kind words. Good luck with the launch!