Micro-Frontends: Navigating Modern Web Architecture's Double-Edged Sword

Marios Fakiolas
Marios Fakiolas
ยท4 min read
Micro-Frontends: Navigating Modern Web Architecture's Double-Edged Sword

In recent times, micro-frontends have been hailed as the knight in shining armor for large web applications. By breaking monolithic frontends into smaller, more manageable pieces, developers are finding new ways to scale and maintain software. However, like all knights, this approach has its weaknesses.

What are Micro-Frontends?

Imagine a sprawling city (your web application). Instead of a single governing body managing every nook and corner (monolithic frontend), the city is divided into districts, each with its local governance (micro-frontends). These districts can function independently but still coexist harmoniously.

Why Opt for Micro-Frontends?

  • Scalability: Large teams can parallelize work by functionality or domain.
  • Independence: Individual segments can be developed, deployed, and scaled on their own.
  • Flexibility: Teams have the autonomy to choose tech stacks based on their requirements.

A Glance at Three Leading Micro-Frontend Solutions

Webpack Module Federation

  • What it is: A feature in Webpack 5 that enables multiple webpack builds to form a single application. It allows loading code from one build into another, facilitating the micro-frontend approach.
  • Benefits: Seamless integration, lazy loading, and shared dependencies.
  • Complexities: Requires alignment on shared dependencies and can increase initial setup overhead.

Have a look here.


  • What it is: A JavaScript framework that helps with building micro-frontend architectures. It can tie multiple frontend applications into one cohesive whole.
  • Benefits: Framework agnostic, allows for coexistence of multiple frameworks, and provides routing mechanisms.
  • Complexities: Introduces an additional layer of abstraction, and requires understanding of its lifecycle events.

Have a look here.

ModernJS Micro-Frontend Guide

  • What it is: A comprehensive guide on how to build micro-frontends using the ModernJS stack.
  • Benefits: Offers an end-to-end tutorial, starting from the basics and covers advanced topics like communication and deployment.
  • Complexities: As it's more of a methodology and guide, the complexities here would be in its implementation nuances and decisions made on the architecture.

Have a look here.

Tackling The Micro-Frontend Maze: Challenges and Solutions

Despite the appeal, transitioning to micro-frontends introduces complexities:

Different Library Versions

  • Problem: Multiple teams might use varied library versions, causing compatibility issues.
  • Solution: Use shared component libraries and ensure regular inter-team sync-ups.

Styling Consistency

  • Problem: Achieving a uniform look and feel becomes a challenge.
  • Solution: Implement shared design systems or CSS frameworks across teams.

Complex Component Communication

  • Problem: Micro-frontends may need to share states or invoke functions from each other.
  • Solution: Utilize state management tools or set standardized communication patterns, like Custom Events.

Development Standardization

  • Problem: Ensuring that different teams follow similar development paradigms is challenging.
  • Solution: Create common development guidelines and conduct periodic code reviews.

Cross-Component Testing

  • Problem: Testing functionalities spanning multiple micro-frontends can be daunting.
  • Solution: Adopt end-to-end testing tools that mimic user behavior across components.

Deployment Complications

  • Problem: Deploying multiple fragments in harmony poses risks.
  • Solution: Use CI/CD pipelines and automate deployment sequences for synchronized releases.

Local Setup Intricacies

  • Problem: Developers might struggle with setting up all micro-apps locally.
  • Solution: Use containerization, like Docker, to mimic production environments locally.

Apps Management and Ownership

  • Problem: Determining which team owns what can get confusing.
  • Solution: Clearly define ownership, responsibilities, and create a central registry for all micro-apps.

One Size Doesn't Fit All

While the benefits of micro-frontends are undeniable, it's crucial to recognize that they aren't suitable for every scenario. The complexities they introduce may outweigh their advantages for smaller projects or tightly-knit teams. An astute understanding of your project's needs and challenges will determine if this modern architectural approach aligns with your vision.

In summary, micro-frontends are reshaping the way developers perceive and build web applications. By staying aware of their potential pitfalls and actively seeking solutions, developers can harness the true power of this innovative approach.


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