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SaaS Migration: <br>Multi-Tenant SaaS Architecture

SaaS Migration:
Multi-Tenant SaaS Architecture

WWG SaaS migration services turn a single-tenant software product, installed or hosted separately for each customer, into one multi-tenant platform delivered as a service. They are for software vendors and companies with a product of their own that want to sell by subscription without multiplying installations. Senior engineers redesign tenancy and data separation, CI/CD pipelines, cloud infrastructure as code and monitoring, so the product can be changed safely while customers are using it.

Definition

What is SaaS migration to a multi-tenant architecture

SaaS migration is the engineering work of moving a software product to a software-as-a-service model built on a multi-tenant SaaS architecture, or of moving an existing SaaS platform onto infrastructure that can carry it. The work covers deployment pipelines, tenancy and data separation, scaling behaviour and release process, because a SaaS product is judged on how safely it can be changed while customers are using it.

specializations

What We Offer

01

Infrastructure as Code (IaC)

Automate and manage your infrastructure using tools like Terraform and CloudFormation for consistent and repeatable deployments.

02

CI/CD Pipelines

Design and implement robust Continuous Integration/Continuous Delivery pipelines using industry standards such as Jenkins, GitLab CI, or Azure DevOps.

03

Cloud-Native Optimization

Optimize your SaaS product for platforms like AWS, Google Cloud, and Azure, ensuring high availability and minimal latency.

04

Monitoring and Observability

Implement tools like Prometheus, Grafana, and Datadog for real-time insights, performance optimization, and issue resolution.

our advantages

Why Choose SaaS DevOps?

Accelerate time-to-market

Accelerate time-to-market through automated pipelines.

Optimize cloud costs

Optimize cloud costs while maintaining scalability.

Enhance security

Enhance security with proactive monitoring and compliance.

process

Why WWG?

01

Proven Expertise

Decades of experience in DevOps consulting and SaaS application development.
02

Tailored Solutions

Custom approaches that align with your business goals and target audience.
03

End-to-End Support

From initial assessment to continuous optimization, we’re with you every step of the way.
04

Cost Efficiency

Optimize cloud usage and minimize operational overheads.
05

Cutting-Edge Tools

Kubernetes, Docker, Jenkins, Terraform, and more.

saas - advantages

Benefits of SaaS DevOps with WWG

Faster Deployment Cycles: Reduce development bottlenecks with automated testing and deployment.
Improved User Experience: Deliver a reliable, high-performance application.
Cost Savings: Save on infrastructure and operational costs with optimized cloud solutions.
Security Assurance: Stay compliant and protect user data with advanced security measures.

businesses

Who are our web applications suitable for

Small and medium-sized businesses looking to automate operations.

Small and medium-sized businesses looking to automate operations.

Startups seeking rapid scalability.

Startups seeking rapid scalability.

E-commerce companies looking to expand into new markets.

E-commerce companies looking to expand into new markets.

reviews

What Our Clients Are Saying

Clutch rating
"WWG's competencies in technical and management aspects were impressive."

WWG successfully delivered a project document and software that fully met RAG requirements. WWG's project management was efficient — they delivered everything on time. Moreover, they showcased clear communication and strong technical capabilities, which were key to the project's success.

Francesco Adinolfi

R&D, Innovaway SpA

Custom Software Development

WWG provided custom software development services for an ICT company. The team designed and developed an innovative ICT software system capable of supporting RAG services.

Paese
Naples, Italy

The engagement

SaaS migration in concrete terms

Duration
Set in scoping, according to the perimeter: number of installations to bring onto the platform, data structure, state of code and releases.
Start
With the initial assessment of the product and the existing installations, which fixes the phased plan before any code is touched.
Who does the work
WWG senior engineers with experience in DevOps consulting and SaaS development. A named technical owner follows the project and documents every decision.
What we need from you
Access to code, environments and one representative installation, a point of contact, the list of customers to migrate with their customisations.
Output
A multi-tenant platform in production, infrastructure as code, CI/CD pipelines, monitoring and observability, documentation of the tenancy decisions.
Format
A phased project from initial assessment to continuous optimisation; optional ongoing operation afterwards for a monthly fee.

The price is set before we start, in scoping, per phase and on the perimeter. We do not publish a price list: two products with the same number of customers can need very different work.

Comparison

SaaS migration and the alternatives

When per-customer installations become a cost that grows with every contract, there are four ways out. This table says what each one is for, so the choice is made on the real problem rather than on the label.

CriterioWWG SaaS migrationNew SaaS product from scratchCloud migration as-isIn-house DevOps team
Who it is forSoftware vendors and companies with a working single-tenant product and active customers.Companies that can afford to rebuild the product while maintaining the old one.Companies that want to leave their own servers without changing the delivery model.Companies that want to build platform operations competence in-house.
What it coversTenancy and data separation, infrastructure as code, CI/CD pipelines, cloud-native optimisation, monitoring.A new system, with customer migration at the end.Moving servers and data to AWS, Azure or Google Cloud; the code stays the same.Depends on the people hired and on the time they can give the project.
DurationSet in scoping, in phases; the first customers move onto the platform before the end.Long and hard to estimate; two products to maintain in the meantime.Shorter; the cost per installation remains.Adds hiring and onboarding time to the project itself.
What you getA multi-tenant platform in production, documented, with pipelines, monitoring and a named owner.A new product, with the risk of losing functions customers relied on.The same product on different infrastructure.In-house skills, if the people stay.
When it makes senseWhen the product is worth it, the customers exist and the per-installation model no longer holds.When the current product is beyond recovery.When the problem is hardware, not the delivery model.When the platform becomes the permanent core of the business and you want to invest in people.

If you are looking to replace installed software with third-party SaaS applications, this is not the right page: this page is about turning your own product into a SaaS platform.

Published case studies

FAQ

Frequently Asked Questions

A SaaS migration is the engineering work of moving a software product from a single-tenant model, one installation or instance per customer, to a multi-tenant platform delivered as a service: one codebase, one release, data separated per tenant. It covers tenancy design, deployment pipelines, infrastructure as code and monitoring. The term is also used for a company adopting third-party SaaS applications in place of installed software; this page is about the first meaning.
This SaaS migration service is for the software vendor: you own a product, your customers run it as separate installations, and you want one multi-tenant platform. It is not the migration of your company's own tools to third-party SaaS products, and it is not a plain cloud migration, which moves servers and data to AWS, Azure or Google Cloud without changing how the product is delivered. A single-tenant product moved to the cloud is still single-tenant.
WWG's SaaS migration covers the four areas that make a multi-tenant product manageable: infrastructure as code with Terraform or CloudFormation for consistent, repeatable environments; CI/CD pipelines with Jenkins, GitLab CI or Azure DevOps; cloud-native optimisation on AWS, Google Cloud or Azure for high availability and low latency; monitoring and observability with Prometheus, Grafana or Datadog. Before all of that, the design of tenancy and of data separation between customers.
A SaaS migration takes a duration set in scoping, according to the perimeter: how many installed customers have to move onto the platform, how their data is structured, what state the code and the release process are in. The price is set before we start, per phase with agreed scope, from initial assessment to continuous optimisation. We do not publish a price list: two products with the same number of customers can need very different work.
WWG senior engineers with experience in DevOps consulting and SaaS application development do the migration, with a named technical owner who follows the project and documents decisions. From you we need access to the code, the environments and one representative installation, a point of contact who knows the product and the customers, and the list of customers to migrate with their customisations. Your team keeps working on the product throughout.
SaaS DevOps is the set of development and operations practices applied to a product delivered as a service: automated release pipelines, infrastructure described as code, monitoring and incident handling. Its purpose is to improve the performance, scalability and security of a SaaS application, and above all to make releasing changes routine while customers are using the product, because on a multi-tenant platform every deployment reaches every customer at once.
DevOps helps a SaaS business on three fronts: it speeds up feature releases, because an automated pipeline replaces manual steps; it ensures a reliable end-user experience, because monitoring and repeatable infrastructure reduce incidents; and it improves collaboration between the people who build the platform and the people who run it. For a subscription product this means fewer interruptions noticed by customers and an operating cost that does not grow with every new tenant.
For SaaS DevOps we use an established stack: Kubernetes and Docker for containers and orchestration, Jenkins, GitLab CI or Azure DevOps for pipelines, Terraform and CloudFormation for infrastructure as code, Prometheus, Grafana and Datadog for monitoring, on AWS, Google Cloud or Azure. The final choice depends on your current stack and on who will run the platform after the migration, because the tools have to stay manageable by your own team.
Yes, we offer both cloud migration and the transformation of a product into a SaaS platform, and we separate the two in scoping. Cloud migration moves your system to AWS, Google Cloud or Azure with minimal downtime and the code largely unchanged. SaaS migration redesigns the product to be multi-tenant. The second often includes the first, but not the other way round: single-tenant software moved to the cloud remains single-tenant.
SaaS DevOps benefits any industry where a software product is sold by subscription to many customers: e-commerce, healthcare, finance, education, business services. The companies that ask us most often are small and medium-sized businesses looking to automate operations, startups that need to scale quickly and e-commerce companies expanding into new markets. The industry matters less than the model: many customers, one platform, one release.
After the SaaS migration the platform enters continuous optimisation: monitoring, reduction of cloud operating costs and improvements agreed with you. You receive documentation of the infrastructure, the pipelines and the tenancy decisions, so your team can run the platform on its own or hand its operation to WWG for a monthly fee. That decision is yours and is not tied to the migration project.
SaaS migration is for software vendors and companies with a product of their own that is sold today as an installation or a dedicated instance per customer, and that want to move to a subscription model on one platform. The typical signal is a maintenance cost that grows with every new customer, because each installation has to be updated separately. It is not meant for companies that simply want to adopt third-party SaaS software.

Related services

What getting to SaaS takes

A multi-tenant product usually means reworking the architecture through microservices migration and moving the workload onto elastic infrastructure through migration to the cloud.

Tell Us What's Broken

Mohamed Deramchi

Mohamed Deramchi

Founder & CEO of WWG

20+ years in IT leadership, product, and cloud consulting. Leads delivery strategy and senior technical direction.

AddressCorso Europa 15, 20122 Milano (IT)

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