### Challenges and solutions in building large Angular apps

In large Angular applications, developers face several significant challenges. One major issue is managing complexity. These apps have lots of components, services, and modules that all need to work together smoothly. Keeping everything organized and easy to understand can be tough, especially with a big team.

Another problem is build times. As the app grows, it can take longer and longer for changes to show up during development. This can slow down the development process and make it harder to stay productive.

Dependency management is another headache. This involves making sure all the different parts of the app work well together and play nicely with outside libraries. 

### Tool limitations

Even experienced teams can struggle with managing large Angular applications without using the right tools. Organizing numerous components, services, and modules becomes challenging without tools that aid in clarity and team collaboration. Utilizing appropriate tools is key for experienced teams to successfully navigate the complexities of large Angular projects.

### Fixing problems with NX

NX offers several benefits for managing large Angular applications. It helps reduce the time it takes to build projects and keeps code well-organized by managing dependencies and structuring code into reusable parts. This makes it easier to maintain and expand applications over time.

One of NX's strengths is its ability to speed up builds. It does this by remembering previous build results and doing multiple tasks at the same time. This saves developers time and lets them make changes quickly.

NX also comes with tools for testing and checking code quality. It works well with common testing tools and helps keep code clean and consistent. This catches mistakes early and ensures code stays high-quality.

Furthermore, NX makes it easy to work together on projects. It keeps all code and shared parts in one place, making it simpler to share code between different projects or teams. This improves teamwork, reduces problems with combining code, and makes development smoother overall.

Manage Large Angular Apps and Supercharge Development Workflows

Learn how to create and maintain Angular applications using NX. 
Designed for Angular developers, this course covers best practices, improving workflow, and migrating existing applications to NX. 
Discover how to configure tools like Cypress for end-to-end testing and Storybook for UI component development. 
By the end of this course, you will have the knowledge and experience to work comfortably with NX on a daily basis.

Next-Level Angular Apps with NX

---
title: Analysis of potential problems in migration of big existing codebases
description: What may be the problem during migration of big, stale existing codebases
privateVideoUrl: https://stream.mux.com/HGywcY2nm1TEHev2ozx5zuY9uKvpl01VkVp0065r5mah8.m3u8
---

In this lesson, I'll describe the most problematic migration parts for a few popular application types.
As we said in the previous lesson, every application is unique,
and has problems that may not happen during other migrations.

Happily, we can predict some common problems if we categorize applications well.
I'm going to split applications by size and organization structure.
**It's very important that some problems you may need to address will not be strictly connected to the code.**
Organizational structure,
number and size of teams, or even how application parts are assigned to teams all these factors may be important.
Some of your decisions may be based on it and equally on the code.

This lesson is focusing on the following cases:

-   One huge application

    -   One small team
    -   Multiple teams
-   Multiple small applications

    -   One small team
    -   Multiple teams
-   Multiple big applications

    -   One small team
    -   Multiple teams
-   One small application

    -   One small team

You may remember similar cases from the lesson about the importance of keeping dependencies in order from the previous module.
Keep in mind
that some problems may be avoided, and the migration process may be easier
if your application does not contain problematic dependencies.

## One huge application

**The biggest problem during the migration of huge applications is, of course, the code.**
The worst part of this case is that all your coworkers work on the same code.
So the whole company will face the same issues if something goes wrong.

### One small team

It may sound silly, but it's easier when big applications are maintained by a small team it's easier to do the migration.
As a team, you work with each other every day.
This fact helps to solve issues that may happen during migration.
Work and tasks can be easily distributed.

What may be the problem during migration of big, stale existing codebases