Leading Professional Services Firm

Multi-Tenant Database Rearchitecture Enables 100X Client Scaling for Global Professional Services Firm

A leading global professional services firm needed to scale their legal entity management system from supporting dozens of clients to thousands. Their single-tenant database architecture created operational overhead and limited growth potential for smaller client engagements. Through a comprehensive multi-tenant re-architecture and micro-frontend integration, the firm achieved the capability to support 3,000+ clients—a 100X increase from their original capacity—while streamlining client onboarding processes and reducing infrastructure management complexity.

Services

Technology & Cloud

Industry

Professional & Administrative

OVERVIEW

Scaling Infrastructure Transforms Business Capacity

The multi-tenant database rearchitecture fundamentally transformed the client’s ability to serve their market. What began as a system supporting approximately 50 clients evolved into a platform capable of handling 3,000+ clients, representing a 100X scaling potential that opened entirely new market opportunities for smaller client engagements.

The integration of a micro-frontend application within the client’s existing platform created a unified client management experience. Business development teams gained the ability to efficiently configure and onboard new shared clients through streamlined workflows, eliminating previous bottlenecks in the client acquisition process.

The transition from individual databases per client to shared resources significantly reduced operational overhead while maintaining data security and access controls.

Phase 1 implementation successfully onboarded nearly 300 shared clients
Multi-step client onboarding wizard improved user experience and data capture
Enhanced performance optimization addressed large-scale data management challenges

THE CHALLENGE

Legacy Architecture Limits Growth Potential

The client’s legal entity management system was architected with individual databases for each client due to compliance requirements and data isolation needs. This single-tenant approach created significant operational overhead, requiring separate database management, migrations, and resource allocation for each client engagement. The architecture effectively limited their ability to serve smaller clients who didn’t require extensive customization.

The existing infrastructure prevented the firm from efficiently onboarding smaller clients who represented a substantial untapped market opportunity. These potential clients needed the same core legal entity management capabilities but didn’t require the level of customization that justified dedicated database resources. The firm estimated they could serve thousands of additional clients if infrastructure constraints were removed.

Managing individual databases for each client created complexity in deployment processes, version control, and ongoing maintenance. Database migrations had to be performed separately for each client, consuming significant developer and operational resources. The approach also made it difficult to implement consistent feature updates across the client base.

The firm’s business development teams used a separate platform for client engagement management, but the legal entity system existed as an isolated application. This separation created workflow inefficiencies and required users to navigate between multiple systems during client onboarding and management processes.

Individual database architecture limited scalability to approximately 50 clients
Compliance requirements necessitated strict data isolation and access controls
Operational overhead increased exponentially with each new client onboarding
Lack of integration with existing platform created workflow bottlenecks

OUR SOLUTION

Multi-Tenant Rearchitecture Enables Massive Scale

The core solution involved redesigning the database architecture to support multiple clients on shared database instances while maintaining strict data isolation and security controls. This required comprehensive analysis of over 500 existing database queries to implement tenant-aware data access patterns. The team modified the migration service to execute DDL scripts once per shared database while ensuring DML scripts ran appropriately for each individual client.

A new micro-frontend application was developed to integrate seamlessly with the client’s existing platform. This integration created a unified user experience where business development teams could access legal entity management capabilities directly within their familiar workflow environment. The micro-frontend included a multi-step wizard for adding new legal entities and streamlined client configuration processes.

Concurrent with the multi-tenant implementation, the team addressed performance challenges related to large-scale data management and database design. The project also included a comprehensive cloud migration from AWS to Azure, implementing Azure Kubernetes Service for improved scalability and management capabilities.

Analyzed and modified 500+ database queries for multi-tenant compatibility
Developed separate repository and deployment pipeline for micro-frontend component
Implemented tenant-aware data access controls and security measures
Created automated migration processes for shared database environments

The implementation included establishing improved software development lifecycle practices, including enhanced requirements management using Gherkin format acceptance criteria and improved story pointing for better velocity allocation. These process improvements reduced project kickbacks and improved delivery consistency throughout the engagement.

Enhanced requirements capture and acceptance criteria definition processes
Implemented improved pointing and velocity management practices
Established testing standards and quality assurance protocols
Reduced project kickbacks through clearer requirement specifications

THE RESULT

Hundred-Fold Scaling Capacity Successfully Achieved

The multi-tenant re-architecture successfully enabled the client to scale from supporting approximately 50 clients to having the infrastructure capacity for 3,000+ clients—a 100X increase in potential client base. Phase 1 implementation demonstrated this capability by successfully onboarding close to 300 shared clients onto the new architecture, validating the approach and confirming the scalability improvements.

The integrated micro-frontend solution streamlined the client onboarding experience through a guided multi-step wizard for adding new legal entities. The solution included improved effective date management, simplified single sign-on capabilities using the client’s internal identity management system, and integration with third-party applications for seamless data flow.

The cloud migration to Azure Kubernetes Service provided enhanced scalability and management capabilities while the database performance optimizations addressed challenges related to large-scale data processing. The shared database approach significantly reduced operational overhead for client management and maintenance activities.

Successfully onboarded almost 300 clients in Phase 1 implementation
Reduced database management overhead through shared resource architecture
Improved client onboarding workflow efficiency through integrated micro-frontend
Enhanced system performance through database optimization and cloud migration
Established foundation for continued scaling to thousands of additional clients

technology

Modern Cloud Architecture Powers Solution

The solution leveraged the client’s existing technology stack while implementing modern cloud-native improvements and multi-tenant capabilities.

Frontend: React (upgraded from version 14 to 18), TypeScript, Next.js micro-frontend
Backend: Node.js with Express API layer, Prisma ORM for database interactions
Database: PostgreSQL (upgraded from version 12 to 14) with multi-tenant architecture
Cloud Infrastructure: Migrated from AWS EC2 to Azure Kubernetes Service with Azure Blob Storage
Authentication: Integration with Open Access Manager for identity management
Development Tools: GitLab for repository management, Jira for project tracking, Docker for containerization