Tech modernization of a legacy platform
Modernization of an outdated B2B SaaS platform with a focus on scalability, performance and future-proofing.
The challenge
Our client, an established B2B SaaS company with over 150 employees, faced significant challenges with its outdated technology platform. The platform had been developed more than 10 years ago and was based on a monolithic architecture with outdated technologies. This led to long development cycles, frequent system failures, and difficulties in integrating new features. Scalability was severely limited, which led to performance issues, especially as user numbers increased. In addition, the tech team was fragmented and worked without clear processes and responsibilities. The company recognized that comprehensive modernization was necessary to remain competitive and enable future growth.
Our solution
For this established B2B SaaS company, we provided an experienced fractional CTO who orchestrated the technological transformation with strategic foresight. After a comprehensive analysis of the existing platform, we developed a modernization strategy with clear priorities and a future-proof target architecture. A carefully crafted migration plan minimized business disruption during the transformation. The technical modernization encompassed three core areas: the gradual migration from a monolith to a flexible microservices architecture, the implementation of a scalable cloud infrastructure with automatic load balancing, and the introduction of modern development practices such as CI/CD and automated testing. A robust monitoring system enabled proactive action in the event of potential problems and significantly increased system availability. Parallel to the technical transformation, we supported the restructuring of the tech team. We defined clear roles and responsibilities, introduced agile development methods, and provided comprehensive training. A newly developed governance framework promoted innovation while maintaining consistency and quality. This holistic approach created a solid foundation for future growth and innovation.
Simplified diagram of the implemented microservices architecture
Technical details of the solution
1. Microservices architecture
The monolithic application was split into independent microservices, which brought the following advantages:
- Independent development and deployment of individual services
- Improved fault tolerance and isolation
- Technology freedom for various components
- Easier scaling during peak loads
2. Cloud-native infrastructure
The implementation of a cloud-native infrastructure enabled:
- Automatic scaling based on real-time traffic
- Pay-as-you-go model for optimized cost structure
- Global availability with low latency
- Improved disaster recovery with a 15-minute RTO (Recovery Time Objective)
3. DevOps and CI/CD
The introduction of DevOps practices and a CI/CD pipeline revolutionized the development process:
- Automated testing with 85% code coverage
- Continuous integration with automated quality gates
- Infrastructure as code for reproducible environments
- Reduction of deployment time from days to minutes
4. Team restructuring
The restructuring of the tech team included:
- Introduction of a squad model with cross-functional teams
- Clear definition of roles, responsibilities, and career paths
- Implementation of knowledge sharing and internal tech talks
- Building a culture of continuous improvement and innovation
The results
- Reduction of system failures by 85% within 6 months
- Increase development speed by 70% through modern CI/CD pipelines
- Successful migration of 80% of core functionalities to microservices
- Reduction in time-to-market for new features from 3 months to 2 weeks
- Reorganization of the tech team with 40% higher productivity
- Cost savings of 25% in IT operating costs through cloud optimization
"The Fractional CTO has not only transformed our technical infrastructure, but also initiated a cultural change in our company. We are now technologically competitive and can react quickly to market requirements. The investment has already paid for itself after just a few months."
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