Why Consider Migrating from Monolithic to Microservices?

Migrating from monolithic to microservices

As we know, every software architecture plays a vital role in developing software systems, and as we progress forward, simplifying the workflow yields better results. In the same way, while monolithic services have contributed significantly and offer great advantages, migrating from monolithic to microservices is indeed necessary. 

Based on research conducted by Nucleus Research, businesses that transitioned from monolithic to microservices experienced a 20% boost in annual revenue growth compared to those sticking with monolithic systems. 

Before delving into the intricacies, it’s important to understand why convert monolithic to microservices counts.  

Monolithic architecture is a single code-based software system where the entire application is built as an indivisible unit. In this architecture, all the components and features of an application, like business logic, data storage, and user interface, are tightly integrated. If tried to change or update one part of the application, there’s a need to redeploy the entire application.  

However, Microservices architecture is an approach designed to build a software application by collecting small and independent services. Each service runs in its own process and communicates with each other through well-defined APIs. Unlike monolithic architecture, here, the application is divided into a set of loosely coupled services that can be developed, scaled, and deployed independently without disturbing the whole application.  The need for migration from monolithic to microservices in software development is because of ever-growing application complexity and the demand for increased scalability.  

How to convert monolithic applications to microservices?   

The reason for converting monolithic to microservices architecture can be less costly and risky than starting to redevelop an application from scratch. Migrating monolithic application to microservices needs careful planning and execution. Deconstructing the monolith into smaller and independent services each handling a specific business capability becomes a crucial consideration during this conversion process. Effective communication between microservices is fundamental, and implementing robust mechanisms, such as RESTful APIs, message queues, or event-driven architectures, is essential. 

Let’s delve deep into this migration process and see what results it can yield. 

Challenges and limitations of Monolithic Architecture

Here are five challenges and limitations associated with monolithic architecture which demand migration to microservices. 

Challenges and Limitations of Monolithic Architecture

Scalability Issues:

As monolithic is a single code-based unit, scaling the entire application as a single unit may lead to many inefficiencies, especially when certain components have different scaling requirements.  

Limited Flexibility and Agility:

Making changes to one part of the monolith requires redeploying the entire application. This lack of flexibility can hinder development agility and make it challenging to adapt to new technologies and frameworks.  

Difficulty in Technology Stack Upgrades:

As the entire application is based on a consistent stack, upgrading or replacing a technology stack can be complex and risky and may have unforeseen consequences for the entire system.  

Collaboration Challenges:

Large monolithic codebases can lead to collaboration challenges among development teams. As multiple teams work on different features or modules, coordination becomes crucial, and conflicts may arise during integration. 

Limited Team Autonomy:

With a monolithic architecture, development teams often share ownership of the entire codebase. This can lead to coordination challenges, as changes in one part of the application may affect other parts. It limits the autonomy of individual teams working on specific functionalities. 


A Guide for Migration to Microservices

The microservices market is anticipated to grow from $1.33 billion in 2023 to $3.72 billion by 2028 with an average CAGR of 22.8%. Given the challenges we’ve mentioned earlier, a guide for migration to microservices architecture is a complex process that requires careful planning and execution. Here is a way to help you navigate through the key steps of a guide for migration to microservices architecture: 

A guide for migration to microservices

Assessment and Planning: 
  • In this guide for migration to microservices, evaluate the existing monolithic application, identifying components suitable for microservices. 
  • Plan the migration strategy, considering business goals, resource availability, and potential challenges. 
Decomposition of Monolith: 
  • Identify and break down the monolith into smaller, loosely coupled modules or services. 
  • Prioritize components based on business impact and dependencies. 
Define Service Boundaries: 
  • Clearly define service boundaries to establish a modular and scalable architecture. 
  • Use domain-driven design principles to align microservices with specific business functionalities. 
API Design and Communication: 
  • Design robust APIs for communication between microservices, ensuring a standardized and interoperable interface. 
  • Choose communication protocols and data formats that suit the needs of the microservices. 
Data Management: 
  • Address data concerns by choosing an appropriate database strategy for each microservice. 
  • Implement data consistency and integrity mechanisms, considering eventual consistency where applicable. 
Technology Stack Selection:
  • Choose technologies and frameworks suitable for microservices, considering the scalability, performance, and maintenance requirements of each service. 
Containerization and Orchestration: 
  • Containerize microservices using technologies like Docker to ensure consistency across different environments. 
  • Implement orchestration tools such as Kubernetes for managing and scaling containers. 
Incremental Deployment: 
  • Adopt an incremental deployment approach to minimize disruption. 
  • Start with a phased rollout, deploying one microservice at a time and validating functionality at each stage through this guide for migration to microservices.  
Monitoring and Logging: 
  • Implement robust monitoring and logging solutions to track the performance, health, and errors within the microservices architecture. 
  • Use tools that provide visibility into the entire system and facilitate troubleshooting through this guide for migration to microservices.  
Continuous Integration and Delivery: 
  • Implement CI/CD pipelines to automate testing, integration, and deployment processes. 
  • Enable continuous monitoring and feedback loops to ensure the ongoing improvement of microservices through this guide for migration to microservices.  

Key Considerations Before Migrating to Microservices from Monolithic Architecture  

Here are five key considerations demanding careful evaluation that convert monolithic to microservices: 

Key considerations before migrating to microservices

Business Alignment:

Evaluate how the migration aligns with overarching business strategies and objectives. 

Cost Analysis:

Conduct a comprehensive cost-benefit analysis, considering both short-term expenses and long-term savings. 

Technical Compatibility:

Assess the readiness of current systems, applications, and infrastructure to ensure compatibility with the proposed migration. 

Data Security and Compliance:

Prioritize data security and evaluate the impact of migration on data integrity, privacy, and regulatory compliance. 

Stakeholder Communication and Support:

Establish clear communication channels with stakeholders at all levels, gaining support early in the planning process to ensure a unified approach. 

Challenges and Strategies in Migration:

Here are five challenges and strategies that convert monolithic to microservices: 

Legacy Integration: 
  • Integrating with existing legacy systems can introduce complexities during migration. 
  • To overcome this challenge, develop a meticulous migration plan, emphasizing seamless integration strategies with legacy systems.
Data Migration Hurdles:
  • Ensuring a smooth transfer of data between systems poses a significant challenge. 
  • Overcome this challenge by prioritizing data backup and establish robust recovery mechanisms to handle migration-related data issues. 
Downtime and Disruption:
  • Minimizing downtime and disruptions during the migration process from monolithic to microservices is a key challenge. 
  • To mitigate this challenge, implement monolithic to microservices migration strategy in phases, facilitating gradual rollouts to minimize disruptions and optimize problem-solving. 
 Skill Set Gaps: 
  • Addressing skill set gaps among the team for handling new technologies and processes is a key challenge. 
  • To overcome this challenge in addressing skill set gaps, conduct training programs to bridge the gaps, ensuring the team is well-equipped for the new technologies. 
 Testing and Validation: 
  • The challenge is rigorous testing and validation processes are necessary to ensure the reliability of the migrated system. 
  • Implement continuous monitoring during monolithic to microservices migration strategy to identify and address these challenges promptly, preventing prolonged disruptions. 

Business Benefits of Migration to Microservices 

Here are three essential business benefits of monolithic to microservices migration strategy: 

Business Benefits of Migration to Microservices

Cost Efficiency: 

Streamlining processes and embracing efficient technologies for significant cost savings. 

Improved Resource Utilization: 

Optimizing resource allocation and minimizing waste through a well-architected system. 

Enhanced Development Speed: 

Accelerating development cycles with agile methodologies and scalable architectures for quicker time-to-market. 

Tezo, your IT services partner, drives the shift from monolithic to microservices architecture for enhanced revenue growth and operational efficiency. Our comprehensive guide and key considerations pave the way for a successful transition. Explore Tezo’s Digital Transformation services for a seamless journey toward business excellence in the dynamic tech landscape. Embrace the future with Tezo and propel your business to new heights.  

Abhinayani Vinjamuru

Passionate Content Writer merging language and tech for compelling content. I thrive on inspiring and connecting through the power of words.

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