Multi-Tenant SaaS Application

About Client

360Alumni, offers a multi-tenantalumni networking and fundraising platform used by universities andorganizations to engage alumni, post jobs, manage events, and collectdonations. The project involved transforming their legacy monolithicapplication into a highly available, scalable microservices architecture on AWSCloud.

This engagement included end-to-endownership: designing the cloud architecture, implementing infrastructure ascode, containerizing the workloads, setting up secure multi-environmentKubernetes clusters, and establishing modern DevOps practices using GitOpsCI/CD pipelines.

• Client: 360Alumni
• Industry: Education
• Platform: AWS Cloud
• Sector: SaaS

Challenge

Complex Workload Refactoring: Breaking a large monolith into independent microservices while preserving data integrity and minimizing downtime.

‍Multi-Environment Consistency:Ensuring dev, QA, UAT, and prod environments remained consistent via Terraform automation.

Service Connectivity &Security:Implementing Istio service mesh for fine-grained traffic control and secure communication between 50+ microservices.

GitOps Adoption:Training the client team on GitOps workflows and integrating ArgoCD with GitLab CI pipelines.

Scalability Under Load:Designing infrastructure to handle spikes exceeding 3,000 requests per minute without performance degradation.

Solution

We implemented a secure and scalable multi-tenant SaaS architecture that allows multiple customers to use the same platform while keeping their data completely isolated. The solution was designed to optimize resource utilization, reduce infrastructure overhead, and enable faster deployment cycles. By leveraging automation, role-based access, and centralized monitoring, we ensured that each tenant could have a customized experience without additional complexity. This approach provided seamless scalability, cost efficiency, and simplified maintenance, allowing the client to focus on growth and innovation instead of infrastructure challenges.

Results

• Successfully migrated to a scalable, cloud-native microservices architecture.
• Reduced deployment time and improved reliability through automated GitOps pipelines.
• Enabled horizontal scaling of services to handle high traffic loads.
• Enhanced security posture with centralized identity, secrets management, and VPN access controls.
• Delivered a modern DevOps platform that empowers the client to innovate faster and deploy confidently.

Technologies Used

• Cloud Architecture & Migration:
  • Designed AWS infrastructure across multiple accounts and environments (dev, QA, UAT, prod).
  • Migrated monolithic services to ~50+ microservices using Docker and ContainerD.
  • Configured AWS EKS managed Kubernetes clusters with Istio service mesh for secure service-to-service communication.
  • Deployed RDS MySQL databases in high availability mode and Redis for caching.
• Infrastructure as Code & Automation:
  • Provisioned infrastructure via Terraform (networking, security, compute, storage).
  • Implemented VPC peering and multi-hosted DNS zones.
  • Configured DR solutions leveraging AWS services and S3 for asset storage.
• CI/CD & GitOps:
  • Established GitLab CI pipelines with self-hosted runners for builds.
  • Integrated ArgoCD for declarative GitOps-based continuous deployments.
  • Enforced policy controls via Gatekeeper.
• Security & Identity Management:
  • Set up Zitadel as Identity Provider with Gatekeeper integration.
  • Deployed HashiCorp Vault for secret management.
  • Configured Twingate for secure VPN access.
• Observability & Monitoring:
  • Enabled New Relic for performance monitoring and logging.
  • Implemented AWS OpenSearch for centralized log aggregation.
  • Deployed AWS Global Accelerator and CloudFront for performance and content delivery.

At Kubelancer Private Limited, we empower businesses to harness the full potential of cloud infrastructure and modern DevOps practices.

Let us collaborate with you to develop infrastructure that is robust, scalable, and aligned with your business goals.

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