Who Can Build a Multi-Tenant SaaS Platform for You? Firms Compared (2026)

If you need someone to build a multi-tenant SaaS platform, usually because an internal tool now has outside customers, there are four kinds of help: a US product engineering firm, a firm with an offshore or European team, a specialist in converting single-tenant software, and a platform that sells the login and permissions layer to your own engineers. This roundup compares six, says which buyer each fits, and gives a price only where the firm publishes one. Razoyo is listed first because this is Razoyo’s blog, so every other entry says where that firm beats us.

How we picked

1. The firm publishes multi-tenant work on its own website. A case study or service page saying how it isolates customers, checked live in October 2026.
2. The mix covers the real choices. Two US firms, two European firms, one platform that is not a development firm, and Razoyo.
3. You can see what you are buying before a call. A published method, timeline or price ranks above “contact us.”
4. There is a real buyer for whom this option beats the others. A roundup where one firm wins every row is an ad.

At a glance

Razoyo, if your internal tool already has customers and you want the rebuild or retrofit call made first

Disclosure: this is Razoyo’s blog, and we are biased.

Razoyo is a software engineering firm in The Colony, Texas (Dallas-Fort Worth), serving clients US-wide since 2011. We take prototypes and constrained systems into production, and on this topic that usually means an internal tool that other organizations now want to use.

That is where Matrix started: an internal CRM for hotel sales teams, with every data model and every workflow scoped to one organization and performance that was unreliable. As the Matrix case study describes, we rebuilt it on Elixir as a fully multi-tenant platform with proper data isolation, role-based access and the infrastructure to onboard new customers cleanly. It launched as Matrix, the sales intelligence product of M1 Intel. The honest call was a rebuild rather than a retrofit, as our hotel sales CRM page says.

Spider, the hotel business intelligence platform now part of Lighthouse, is the other proof. It began as an internal tool that emailed reports to revenue managers and outgrew its first version; more than 10,000 people a day now use it. Each management company’s team sees only its own properties while every company runs on one shared platform, with roles at hotel, portfolio or system level (Spider case study). Spider ranked #1 of 74 for Business Intelligence at the 2025 HotelTechAwards. We have also delivered systems for several Fortune 500 companies, always under NDA, so we name none of them.

The first paid step is a System Spec: $2,500 fixed, producing a product brief, a PRD, a senior-engineer estimate and a build or don’t-build call, yours to keep even if you build elsewhere. After that, the published price list: an MVP from $5,000, a production build from $10,000, support from $1,500 a month. Before any work above the Spec, a business analyst puts a level of effort and a budget on each piece and gets your confirmation first. No approval, no work.

Ideal for

• Companies whose internal tool other organizations now want to use
• Teams that have outgrown a platform but cannot lose a year to replatforming
• Buyers who want a written build or don’t-build answer before committing a build budget
• Hospitality software, where both of our public multi-tenant proofs sit

Why they stand out

Razoyo has taken two internal tools to products serving many organizations on one shared platform, and published what that took, including when the answer was a rebuild. The price of finding out is fixed, so nobody has a reason to sell you the bigger job.

Pros

• A fixed, published first step. $2,500 for the System Spec, and the document is yours either way.
• Multi-tenant proof at production scale. Matrix for M1 Intel, and Spider at more than 10,000 daily users.
• Every piece of work is approved first. Estimated and budgeted before anyone starts.
• You see changes before customers do. Every change lands on staging for your approval.
• Month to month after launch. Thirty days’ notice to stop a retainer.

Cons

• Build prices are ranges until the Spec is done. “From $10,000” is a floor, not a quote.
• Our public multi-tenant proof is in hospitality. Our Fortune 500 work is under NDA, so we cannot show it to you.
• Not built to put dozens of engineers on a project next month. A large bench is a different purchase.
• Not a penetration testing firm or a SOC 2 auditor. If a customer asks for either, you hire one as well.

Verdict: pick Razoyo when an internal tool has outside customers and you want a written, fixed-price answer on retrofit or rebuild.

Code and Trust, if you want an onshore team and the price in writing for a new SaaS product

Code and Trust is a custom software firm in Mt Pleasant, South Carolina. It describes itself as a fully in-house, onshore team that has built SaaS products across healthcare, legal, logistics and operations since 2018. Its SaaS page is unusually specific: the multi-tenant layer is row-level security in PostgreSQL with tenant-scoped API middleware, “complete data isolation between customers without the cost overhead of separate per-customer deployments.” The engagement also covers Stripe billing, tenant-level admin roles, SSO/SAML for enterprise customers, audit logs, tenant onboarding flows and a super-admin console.

Terms are stated plainly: price agreed in writing, and full source code and IP transfer on final payment. It publishes timelines rather than prices: a SaaS MVP typically takes 12 to 20 weeks, and enterprise multi-tenant platforms with complex permissioning run 20 to 28 weeks. Its page separates SaaS product builds from internal tooling, so if you start from an existing internal tool, ask whether it would extend that code or rebuild it.

Ideal for

• Founders launching a new SaaS product who want a fully in-house US team
• Buyers who need a fixed price before engineering starts
• Products that fit a React, Node.js or Python, and PostgreSQL stack

Why they stand out

It names its isolation method on the page, which is the answer you should demand from every firm here, and puts the price in writing before the build.

Pros

• Onshore and in-house. A real requirement for some buyers.
• Isolation enforced in the database. One missed filter in the code is less likely to leak data.
• Enterprise features in scope. SSO/SAML, audit logs and tenant admin roles from the start.
• Published timelines. 12 to 20 weeks for an MVP.

Cons

• No published price. You learn the number after scoping.
• Scoped to new SaaS products. Converting your existing tool may mean a rewrite on its stack.
• A fixed stack. If your tool runs on .NET, PHP or Elixir, expect a move.

Verdict: pick Code and Trust for a new SaaS product built onshore on a JavaScript or Python stack with PostgreSQL.

Telliant Systems, if you run on Microsoft technology and want each customer in its own database

Telliant Systems is a software product development company with a US office in Alpharetta, Georgia, and a development center in Chennai, India. Its CEO co-founded it in May 2010, and its homepage presents it as a Microsoft partner focused on Azure modernization.

Its multi-tenant proof is concrete. A car wash operator’s obsolete software could not handle growing three-location operations and lacked proper database architecture. Telliant built five mobile apps and a web platform with membership billing, dashboards, payroll and reporting, “built on a scalable multi-tenant architecture using .NET 6.0 and ASP.NET Core,” subscription-based “with dedicated database per tenant.” That is the bridge pattern explained below: one shared application, each customer’s data in its own database. No price is published.

Ideal for

• Companies already on .NET or Azure
• Buyers who want a US point of contact with an offshore delivery center behind it
• Products where each customer’s data should sit in its own database

Why they stand out

The published case starts where many readers are, with obsolete software that could not keep up, and names its tenancy model in plain words.

Pros

• A database per tenant. Simpler per-customer backup and a clear boundary between customers.
• Microsoft depth. A natural fit if your tool already runs on .NET.
• A US office plus an offshore center. Usually a lower blended rate than an all-US team.

Cons

• No published price. Ask what the first step costs.
• Time zones. Ask which hours your Chennai engineers overlap with yours.
• Per-tenant databases cost more to run. Every new customer adds a database to patch and back up.

Verdict: pick Telliant when you are a Microsoft shop that wants each customer in its own database and an onshore and offshore team.

Brocoders, if some customers can share a platform and others need their own

Brocoders, founded in 2014 and registered as an Estonian legal entity in the EU, describes itself as an AI-powered application modernization company. Its SaaS page names the three patterns it chooses between: a shared database with tenant partitioning, “most cost-efficient, appropriate for most B2B SaaS”; separate schemas per tenant; or fully isolated per-tenant databases, “required when regulatory or enterprise contractual terms demand complete data separation.”

The most relevant case is in its write-up on turning internal tools into SaaS. A client began on dedicated single-tenant environments, found separate instances inefficient as it grew, and moved to multi-tenancy while keeping the option to switch some enterprise clients back to their own instance. Brocoders re-architected for both shared and dedicated deployments and built tenant switching. Its own verdict on that hybrid: harder to design, but a strong competitive advantage.

Its first step is published: a software audit, Essential at $5,000 or Standard at $9,900, fixed scope, in 5 or 10 business days, ending in a refactor-versus-rebuild recommendation priced module by module. Repositories, cloud tenancy and credentials move into accounts you own before a rebuild starts.

Ideal for

• Products that sell to both small customers and enterprises with strict isolation terms
• Teams that want a fixed-price audit before anyone quotes a build

Why they stand out

It has published the hybrid case, shared for most customers and dedicated for a few, where many B2B products land after their first enterprise contract.

Pros

• A published, fixed-price audit. $5,000 or $9,900, in 5 or 10 business days.
• All three isolation patterns on the table. Chosen per product, not one size for all.
• Hybrid tenancy experience. Shared and dedicated deployments in one system.
• Your accounts, your credentials. Moved into your name before a rebuild starts.

Cons

• European time zones. Limited working-hours overlap for a US West Coast team.
• A hybrid model costs more. Two deployment models to build, monitor and support.
• No published build price. The audit price is a first step, not a quote.

Verdict: pick Brocoders when some customers will demand their own environment and you want a known-price audit first.

Clockwise Software, if you are turning a working product into a white-label, multi-tenant one

Clockwise Software is a development company in Dnipro, Ukraine, founded in 2014, with 80+ team members and 200+ completed projects by its own count. It says it retains top specialists for 6+ years, and lists SaaS development among its areas of expertise.

Its published migration is Whitelance, a marketplace whose founders wanted to sell it as a white-label product other companies could brand as their own, which meant moving from single-tenant to multi-tenant. Clockwise says it “rebuilt the core structure from scratch to enable a Bridge model”: each tenant gets a customized front end and its own database, while all of them share a single backend. Adding a new tenant became “an automated process rather than a manual engineering task.” Its guide is candid about the risk: migration “is a complex process that requires an experienced team to ensure the live application doesn’t break during the transition.” No price is published.

Ideal for

• Founders who want to license their working platform to other companies under their brands
• Buyers who want Eastern European rates

Why they stand out

It published a single-to-multi-tenant migration with the architecture named, and treats automated tenant onboarding as the goal, the right test of a real multi-tenant platform.

Pros

• A published single-to-multi-tenant migration. With the bridge model and the outcome described.
• Automated tenant onboarding. A new white-label client without a manual engineering task.
• A stable team. Specialists retained for 6+ years, by its own account.

Cons

• Based in Ukraine. Limited working-hours overlap for a US team; ask about continuity planning.
• No published price. Ask what an assessment costs before you share the code.
• The published case was a rebuild of the core. Budget for that rather than a light retrofit.

Verdict: pick Clockwise Software to turn a working product into a white-label platform with a team that has done that migration.

WorkOS, if your own engineers will do the build and need enterprise sign-in and roles off the shelf

WorkOS is not a development firm. It sells building blocks for adding enterprise features to your own app: user management, single sign-on for any SAML or OIDC identity provider, directory sync for provisioning users, role-based access control, audit logs, multi-factor authentication and an admin portal for your customers’ IT teams.

Its RBAC product scopes custom roles to each customer’s organization, defining permissions “without affecting access for others,” and can sync roles from your customers’ identity provider groups. Pricing is published: AuthKit user management is free up to 1 million users, single sign-on and directory sync are $125 per connection a month for the first 15 connections with volume discounts after that, and audit log streaming is $125 a month per SIEM connection.

What it does not do: decide how your data is partitioned, or stop one customer’s query from returning another customer’s rows.

Ideal for

• B2B products whose first enterprise customer just asked for single sign-on
• Teams with engineers in-house who would rather not build authentication

Why they stand out

It turns the enterprise checklist (SSO, SCIM, roles, audit logs) into a purchase with a published price instead of months of engineering.

Pros

• Published, usage-based pricing. Free up to 1 million users on AuthKit.
• Roles scoped per customer organization. Custom roles for one customer do not change another’s.
• Enterprise sign-in ready-made. Any SAML or OIDC provider through one integration.
• Audit logs included. The evidence an enterprise security review asks for.

Cons

• Not a development firm. Isolation, the data model and the integration are still yours.
• Per-connection costs add up. Every enterprise customer on SSO is another connection.

Verdict: pick WorkOS when your own engineers do the multi-tenant work and you want enterprise sign-in and roles without building them.

What does multi-tenant actually mean for a buyer?

Multi-tenant means one application serves many customer organizations, each of which sees only its own data. In Microsoft’s Azure architecture guidance, tenants are distinct from users: “multiple users from a single organization, company, or group form a single tenant.”

The decision that matters is how much each tenant shares. The AWS SaaS Lens names three models, and Azure’s tenancy models describe the same ground:

Two points buyers miss. A copy of your app per customer is not SaaS on its own: AWS notes that even a silo “still relies on a shared identity, onboarding, and operational experience.” And isolation is not optional in any model. AWS calls crossing the tenant boundary “a significant and potentially unrecoverable event for a SaaS business” in its tenant isolation guidance.

When does an internal tool need to become multi-tenant?

The day a second organization pays to use it. Until then, single-tenant is correct: an internal tool scopes every data model, every query and every workflow to one organization. A second customer needs four things the first never did: data isolation, role-based access, per-tenant configuration and a clean onboarding path. That is the work Matrix needed.

The signals arrive before the contract. A peer company asks to use the tool. Someone proposes “just giving them a login.” Sales wants to demo it with real data on screen. Each is the moment to decide whether this is a product, because retrofitting multi-tenancy after the second customer is live means changing the foundation while people stand on it. If only your company will ever use the tool, keep it single-tenant and simple.

We outgrew our off-the-shelf software. Who can build a custom replacement?

Any of the development firms above, but first check whether you need a replacement or a layer. Our advice on the hotel sales CRM page applies beyond hotels: configuration is cheaper than building, so exhaust it first. Where it stops working is usually the data model rather than the features.

Past that point there are three options, laid out on our platform limits page. Keep working around it, and the workarounds become the system. Replatform everything, which is slow and hands you a fresh set of limits. Or keep the platform for what it does well and build the custom layer that models your actual process, scoped through a $2,500 Fit Spec. When the tool genuinely has to go, that is a new system, scoped through a System Spec.

Settle one thing early: a replacement for your own company is single-tenant. You only need multi-tenancy if you will sell it to others, and building it in “just in case” adds cost to every feature. If the thing you outgrew is a spreadsheet rather than a platform, read how to replace a business-critical spreadsheet.

Our internal tool is now used by paying customers and I am worried about security. What should we do?

Test whether one customer can see another customer’s data, this week, before anything else. Internal tools were built for people allowed to see everything, so access control fails first. OWASP ranks Broken Access Control first in its 2025 Top 10 and reports that “100% of the applications tested were found to have some form of broken access control.”

The OWASP Multi Tenant Security Cheat Sheet lists cross-tenant data leakage among the key risks, and its first practice is direct: “Treat client-supplied tenant identifiers as selectors only,” then verify the logged-in user belongs to the tenant selected. In practice:

• Find the boundary. Ask where tenant isolation is enforced. If the answer is “every query filters by customer,” one forgotten filter is a breach.
• Derive the tenant from the login, never from the request. A header or URL parameter that names the customer can be edited.
• Review the roles. Removing someone’s access must actually remove it.
• Move credentials out of the code and rotate them. It is the second gate of our Five-Gate Production Check, right after access.

If the code came from someone else, the firms that take over existing codebases and rewrite or refactor an inherited codebase cover that decision in more depth.

Razoyo’s Second-Customer Test

Run this before you call anybody, including us. It is built from the four things our hotel sales CRM page says a second customer needs, the four Matrix needed. Each test is pass or fail, and every fail is a line item on the quote you are about to receive.

1. Data isolation. Create two test customers. Log in as the first, open a record, and change its ID in the address bar or API call to one belonging to the second. Fail if anything comes back.
2. Role-based access. Write down every role and what it can see, per customer. Spider needed hotel, portfolio and system levels plus a master administrator. Then remove one person’s access and confirm they are out. Fail if the only real role is “logged in.”
3. Per-tenant configuration. List what differs from one customer to the next: settings, workflows, branding, integrations. Fail if any of it lives in a copy of the code, or in a value an engineer edits by hand.
4. A clean onboarding path. Time how long it takes to add a new customer, from signed contract to their first user logging in. Fail if it needs an engineer, a database script or a new deployment.

So who should you call?

Call the firm that matches your starting point. A new SaaS product: Code and Trust onshore, or Brocoders if enterprise customers will want their own instance. A working product to license under other brands: Clockwise Software. A Microsoft shop wanting a database per customer: Telliant. Engineers in-house who need enterprise sign-in and roles: WorkOS. An internal tool with paying customers and an open retrofit-or-rebuild question: we answer that for a fixed $2,500, and if the answer is three fixes rather than a rebuild, that is what you will hear. Every step and price is on our process page, and what it costs to take an AI-built prototype to production breaks the build side down.

Key takeaways

• Multi-tenancy is a commercial decision first. Build it when a second organization will pay, not “just in case.”
• The tenancy model sets cost and risk. Silo costs most, pool least, bridge sits between.
• Isolation fails quietly. OWASP found broken access control in every application it tested; test cross-tenant access yourself.
• A second customer needs four things. Data isolation, role-based access, per-tenant configuration and a clean onboarding path.
• Most firms publish method, few publish price. Razoyo, Brocoders and WorkOS publish a number; ask everyone else for the first step’s cost.

Key terms glossary

• Tenant. One customer organization using a shared application; its staff are users within it.
• Multi-tenant SaaS. One application serving many customer organizations, with each one’s data kept apart.
• Tenant isolation. The controls that stop one tenant from reaching another tenant’s data or resources.
• Silo, bridge and pool. AWS’s names for dedicated, mixed and fully shared tenancy models.
• Row-level security. A database feature that limits which rows a query can return, used to enforce tenant boundaries.
• Role-based access control (RBAC). Permissions assigned to roles, such as admin or viewer, rather than to individual users.

FAQ

Who can build a multi-tenant SaaS platform for us? Development firms that publish multi-tenant work include Razoyo, Code and Trust, Telliant Systems, Brocoders and Clockwise Software. If your own engineers are doing the build, WorkOS sells the enterprise sign-in and roles layer. Match the firm to your starting point: a new product, an internal tool with customers, or a product to white-label.

When does an internal tool need to become multi-tenant? When a second organization will pay to use it. Before that, single-tenant is the right design. A second customer needs data isolation, role-based access, per-tenant configuration and a clean onboarding path, none of which an internal tool was built with.

Can an internal tool be converted to multi-tenant, or does it need a rebuild? It depends on the data model. If customer data can be separated cleanly and roles can be added, a retrofit is often realistic. If every data model, query and workflow assumes one organization, rebuilding the core is usually cheaper than patching it, which was the call on Matrix.

We outgrew our off-the-shelf software. Should we build a custom replacement? Exhaust configuration first, because it is cheaper than building. When the limit is the data model rather than the features, build a custom layer around the platform you keep or replace it with a new system. A replacement for your own company does not need to be multi-tenant unless you will sell it.

Our internal tool now has paying customers. What should we do about security first? Test whether one customer can see another’s data by changing a record ID while logged in as a test customer. Then take the tenant from the logged-in user, never from a value in the request, review the roles, and move credentials out of the code. OWASP ranks broken access control as the top web application risk.

Do we need a separate database for every customer? Not usually. A shared database with strict tenant isolation is the most cost-efficient model for most B2B products. A database per customer gives a clearer boundary at a higher running cost, and is often reserved for enterprise or regulated customers.

How much does it cost to build or convert a multi-tenant SaaS platform? Most firms quote after scoping. Here, Razoyo publishes a $2,500 fixed System Spec and a production build from $10,000; Brocoders publishes a software audit at $5,000 or $9,900; WorkOS publishes usage-based pricing for its sign-in and roles layer.

Talk it through

If your internal tool has outside customers and you are not sure whether it needs a retrofit or a rebuild, that is a free 30 minute conversation. Bring a description of how customers log in and where their data lives. We will run the Second-Customer Test with you and tell you which parts fail. Schedule Free Consultation. If you do not need us yet, that is what you will hear.

Paul Byrne is President of Razoyo, a software engineering firm in The Colony, Texas taking prototypes and constrained systems into production since 2011.