Monolith to microservices migration
Appfront guides organisations in splitting monolithic applications into scalable microservices. Improve deployment speed, team autonomy and scalability without the risk of downtime.
Why Migrate to Microservices?
Monolithic applications become increasingly difficult to maintain, scale and develop over time. Microservices offer the flexibility that modern organisations need.
Scalability
With microservices, you scale only the services that need it, rather than the entire application. This saves resources and improves performance under peak load.
Deployment Speed
Teams can develop and deploy features independently without waiting for other teams. Move from weekly releases to multiple deployments per day.
Fault Isolation
A bug in one service doesn't bring down the entire application. Microservices isolate failures and ensure higher availability of your system.
Monolith vs Microservices Architecture
A direct comparison between monolithic and microservices architecture to help you make the right choice for your organisation.
| Aspect | Monolithic Architecture | Microservices Architecture |
|---|---|---|
| Scalability | Entire application must scale | Individual services scale independently |
| Deployment | Redeploy the entire application | Deploy services independently |
| Team Autonomy | Teams dependent on one another | Teams work independently |
| Technology Stack | One stack for everything | Best technology for each service |
| Fault Tolerance | One bug can bring everything down | Faults stay isolated |
| Codebase | Large, complex codebase | Small, focused codebases |
| Time-to-Market | Long release cycles | Fast, frequent releases |
| Testing | Extensive regression testing required | Targeted tests per service |
Our Migration Strategy: The Strangler Fig Pattern
We apply the proven Strangler Fig Pattern for safe, incremental migration. No big bang releases, but a gradual transition in which the existing system remains operational.
Why Strangler Fig?
No Downtime
The existing system keeps running while new microservices are built and tested in parallel.
Incremental Risk
Small, manageable steps rather than one large, high-risk migration. Each step is validated before the next begins.
Early Value Delivery
Start delivering value straight away with the first migrated services, rather than waiting for the entire migration to finish.
Domain-Driven Design
Bounded Contexts
We identify clear domain boundaries to define services that represent business capabilities.
Event Storming
Workshops with stakeholders to identify business events and aggregates for optimal service decomposition.
Context Mapping
Define clear relationships between services for effective communication and data consistency.
Microservices Migration Process
Our proven migration process ensures a smooth transition from monolith to microservices with minimal impact on the business.
Appfront Microservices Expertise
- Container orchestration (Kubernetes, Docker)
- Service mesh implementation (Istio, Linkerd)
- Event-driven architecture (Kafka, RabbitMQ)
- API gateway design and implementation
- Distributed tracing and monitoring
- Database-per-service patterns
Free Migration Assessment
Unsure whether microservices suit your situation? Our assessment helps with:
- Analysis of your current architecture
- Identifying migration candidates
- Assessing complexity and risk
- Cost-benefit analysis
- Roadmap and timeline planning
When to Migrate to Microservices?
Microservices are not always the right choice. Here are signs that your monolith is ready for migration.
Deployment Bottlenecks
Teams have to wait on each other before releases. Small changes call for extensive regression testing and coordination across teams.
Symptoms: Long release cycles, merge conflicts, deployment anxiety, large teams working on the same codebase.
Scalability Issues
The entire application has to scale, while only specific components are causing the load. Resources are used inefficiently.
Symptoms: High infrastructure costs, performance problems under peak load, over-provisioning of resources.
Technology Lock-in
An outdated technology stack that is difficult to update. Adopting new technologies is risky because of tight coupling.
Symptoms: Old framework versions, security vulnerabilities, difficulty finding talent, technical debt.
Organisational Growth
Growing teams that keep getting in each other's way. Conway's Law means the architecture has to follow the organisation.
Symptoms: Communication overhead, unclear ownership, teams that cannot work autonomously.
Not sure whether microservices are the right choice?
Sometimes a modular monolith or a phased approach is better. We help you choose the right architecture for your specific situation.
Frequently Asked Questions About Microservices Migration
Answers to key questions about migrating monolithic applications to a microservices architecture.
A landscape made up of separate services can no longer be debugged by looking through the logs. That is why you should build in observability and monitoring from the start: a request that passes through four services must be traceable from beginning to end.
Ready to modernise your monolith?
Schedule a no-obligation assessment and discover how microservices can improve your development speed, scalability and team autonomy.
Current context (April 2026)
HubSpot offers extensive integration options via its CRM API for contacts, deals, tickets and marketing events, plus webhook-based real-time sync.
Source: HubSpot Developer Documentation (developers.hubspot.com)