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Rebuilding APEX's CRM: A Success Story

Transforming Legacy Systems into Future-Ready Solutions

At VaynerSystems, we thrive on solving complex technological challenges. One of our recent successes involved replacing an aging CRM system for Apex Window Werks, a window repair company struggling with outdated infrastructure. Their existing system, built on AngularJS v1.4.14, Symfony v2.6.6, and MySQL 8.0.21, was running on PHP 5.6—an environment that no longer met modern security and performance standards.


The Challenge: Outdated Technology and Inefficiencies

APEX's old CRM was slow, rigid, and difficult to maintain. It lacked flexible role management, modern security standards, and seamless integration with other business processes. Additionally, appointment scheduling—a core functionality—was cumbersome and inefficient.

Our task was clear: design and develop a new, future-proof CRM that would not only replace the legacy system but also improve operational efficiency, security, and scalability.


Our Approach: Modern, Scalable, and Secure

Technology Stack

To ensure scalability, maintainability, and performance, we adopted a cutting-edge technology stack:

  • Front-End: Angular with Angular Material and Storybook for a seamless UI/UX experience.
  • Back-End: .NET for robust, high-performance API development.
  • Unit Testing: BDDfy for behavior-driven development and executable specifications.
  • Deployment: Kubernetes for efficient container orchestration and scaling.
  • Monitoring: Kibana for real-time log tracking and diagnostics.
  • Automation: Cypress

Key Features and Enhancements

Our development focused on six core areas:

  1. Flexible Role Management – User-to-role and role-to-function mapping for better control.
  2. Security-First Development – Implementing best security practices from the ground up.
  3. Customer Management – Centralized and improved customer data handling.
  4. Job & Appointments Management – A dashboard-driven approach for better oversight.
  5. Appointment Scheduling – A revamped scheduling system for efficiency.
  6. Advanced Reporting – Actionable insights with customizable reports.


Achieving a Clean, Future-Proof Architecture

One of the core principles of our CRM API development was Clean Architecture, ensuring that:

  • Business logic remains independent of frameworks, databases, and external providers.
  • The system is testable without dependencies on UI, databases, or external services.
  • Legacy MySQL can be replaced with MS SQL, MongoDB, or any other DB without affecting business rules.
  • External integrations (such as SMS providers) can be swapped effortlessly.


The Results: APEX's Digital Transformation

With the new CRM fully deployed, APEX experienced:

  • 90% faster appointment scheduling
  • Enhanced security with role-based access control
  • Improved user experience with an intuitive interface
  • Scalable and maintainable architecture ready for future growth


Conclusion

The successful migration from an outdated CRM to a modern, high-performance system underscores our expertise in software transformation. At VaynerSystems, we don’t just build solutions—we future-proof businesses.

Looking to modernize your legacy systems? Let’s talk!


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