Incremental Rewrites for SaaS Startups: All You Need to Know

Incremental rewrite

Incremental rewrites are a hot topic in the world of software as a service (SaaS) startups. Instead of making huge changes to code all at once, which can be confusing and problematic, incremental rewrites involve updating small parts of the system over time. This approach is especially efficient when making gradual improvements. In this article, we’ll explore the ins and outs of incremental rewrites, including their benefits and challenges.

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What is an Incremental Rewrite?

Incremental rewriting is an effective way to update existing software or systems without having to start from scratch. You can replace pieces of code one at a time and still keep the functionality of the original. This approach works especially well when dealing with large and complex codes, since it avoids the daunting task of completely rewriting a system. Additionally, incremental rewriting allows for more flexibility in development, as well as frequent testing and feedback. All these benefits make it a great solution when time and money are limited!


When making changes to the codebase of a SaaS startup, it can be beneficial to make them in smaller increments. This way, there is less risk that new bugs or incompatibilities will be introduced when updating. It’s like replacing items from your closet one at a time instead of all at once; if you do it incrementally, you’re less likely to miss anything.

Besides reducing risk, incremental rewriting also frees up resources for more efficient updates.
This is especially helpful for startups with limited funds, as they benefit from faster and cheaper updates. Additionally, it allows for more flexibility in the development process with changes being made quickly and easily. This means you can experiment and iterate more frequently, creating better products and happier customers while also cutting down on costs.


The incremental rewrite process presents a unique set of challenges. For example, one key point to keep in mind is that features have to remain functional. At a same time, both old and new code must be managed harmoniously. This can lead to a more complex, ever-changing codebase that can be difficult to test and debug if any issues arise. The complexity of the task adds an extra layer of difficulty when trying to identify, isolate and fix any bugs or errors.

How to Plan and Execute an Incremental Rewrite for SaaS Startups

If you’re thinking about reworking some existing code, prioritize which parts need to be replaced first. This will help the system run more smoothly and efficiently. Start by evaluating the current code and pinpointing any areas that could use improvement. Then decide what parts are most in need of replacement.

After that, create a list of tasks detailing how the updates will take place. Split large assignments into smaller ones that can be completed quickly. Check every task thoroughly before releasing it into production.

Lastly, evaluate the effects these changes may have on users. If there’ll be any disruption to the user experience, make sure they’re aware of it beforehand. Include instructions on how to operate the new system and make sure your changes are compatible with other integrations. Don’t forget to document

Tips for Optimizing an Incremental Rewrite for SaaS Startups

When you’re doing an incremental rewrite, it’s essential to make the process as efficient as possible. Try using Continuous Integration tools that quickly detect errors and bugs in your code so they don’t go live in production. Automated testing tools can also be useful for discovering any issues with rewriting.

And make sure all your code is up to date with the latest version too. This will help to ensure new features work well with existing code, and let you fix bugs fast!

Best Practices for Maintaining an Incremental Rewrite for SaaS Startups

When conducting an incremental rewrite, it’s essential for us to keep track of the changes and establish a process for testing them before they go live. To do this, version control systems such as Git or Mercurial are extremely helpful for tracking all modifications made during the rewriting process.

In addition, make sure that all changes made are properly documented—this helps your team understand which changes were made, when they were implemented, and why they were done. This traceability is critical in identifying any issues that may arise during the rewriting task.

Identifying Potential Pitfalls of an Incremental Rewrite for SaaS Startups

When developing software, it’s important to update the code incrementally. But as each small piece is updated, there’s a risk of introducing new bugs or errors. That’s why it’s crucial to test each change before releasing it into production.

It’s also important to keep all pieces of code up-to-date with the latest version. This ensures that new features work well with existing code and any problems are fixed quickly.

Remember to always test and update your code regularly to avoid issues down the line.

Examples of Successful Incremental Rewrites for SaaS Startups

Sometimes, software companies use something called an incremental rewrite when they make changes to their products. Basically, they don’t change everything at once. Instead, they make little modifications in small parts of the codebase over time – like changing the colors or improving certain features. This way, old features still work while new ones are added in.

For example, Dropbox and Atlassian both used this approach to redesign their cloud storage and project management applications, respectively. The idea was to gradually improve the existing applications without having to totally start from scratch.


Incremental rewrites can be a useful tool for SaaS startups when looking to make improvements to their existing systems and applications. This approach allows for gradual updates and improvements to the system, allowing for faster adoption and less disruption than a full-scale rewrite.

However, it is important to ensure that all pieces of code remain up to date with the latest version in order to avoid introducing bugs or incompatibilities into the system. Finally, it is important to implement effective workflows and testing procedures to ensure that any changes made during the rewriting process are thoroughly tested before they are released into production.

BY Flux Team