Maintenance and further development are two distinct activities within software management. Maintenance focuses on keeping existing software stable and secure, while further development involves adding new functionality or improving what is already in place. The distinction matters because both activities require a different approach, planning, and budget. In this article, we answer the most frequently asked questions on this topic.
When does something fall under maintenance and when under further development?
Something falls under maintenance when the goal is to keep the software working as it should: fixing bugs, applying security updates, maintaining performance, and ensuring compatibility with new systems or browsers. Further development begins as soon as you add something new or fundamentally change existing functionality.
A practical distinction: if a user reports an error and you fix it, that is maintenance. If that same user requests a new export format or an additional step in a workflow, that falls under further development. The difference lies in the intent: preserving versus expanding.
- Maintenance: bug fixes, security patches, server configuration, compatibility updates
- Further development: new features, improved user experience, integrations with other systems, architectural changes
In practice, the two sometimes overlap. A security update can be technically significant and feel like a major change, while a small new button may add little in terms of functionality. The boundary is not always clear-cut, but the question “does this solve an existing problem or does it add something new?” quickly helps you determine the right category.
What are the costs of software maintenance compared to further development?
Software maintenance is generally cheaper per hour than further development, but it is an ongoing cost. Further development requires more preparation, design, and testing work, which makes the initial investment higher. Over the entire lifespan of software, however, maintenance costs are often greater than the original development costs.
A useful way to understand this: maintenance is comparable to servicing a car. You pay regularly for small services to prevent larger problems. Further development is like installing a new navigation system: a one-time investment with a clear end result.
Factors that determine costs:
- The complexity of the existing codebase
- The quality of the documentation and the technical debt
- The experience level of the developers
- The frequency of releases and updates
With remote software development, as we offer it, hourly rates are lower than at local agencies, making both maintenance and further development more accessible without compromising on quality.
How do you plan maintenance and further development simultaneously?
Planning maintenance and further development simultaneously is done by deliberately separating them in your sprint or release planning. Reserve a fixed percentage of development capacity for maintenance, so that it does not continually get pushed to the background as soon as new features appear on the roadmap.
A widely used approach is the 70/30 split: 70% of capacity goes to further development, 30% to maintenance and technical debt. You adjust this percentage based on the age and stability of your software. Older systems typically require more maintenance time.
Concrete steps for effective planning:
- Map out the existing technical debt before drawing up a roadmap
- Make maintenance tasks visible in your backlog, not as an afterthought
- Discuss the balance between maintenance and new features in every planning conversation
- Use a fractional CTO or technical lead to safeguard priorities
The danger is that maintenance is structurally postponed as soon as there is commercial pressure to deliver new functionality. A clear agreement on capacity allocation prevents this from coming at the expense of your platform’s stability.
Who is responsible for maintenance and further development?
Responsibility for maintenance and further development lies with the software development partner or the internal development team, in collaboration with the product owner or client. The technical execution is a task for developers, but prioritization is a joint decision.
In practice, we see that responsibility becomes unclear when there is no fixed point of contact overseeing the technical landscape. This is precisely where a technical point of contact, such as a fractional CTO, adds value: that person safeguards both the quality of maintenance and the direction of further development.
Clear agreements on responsibility include:
- Who decides which bugs get priority?
- Who approves new features before they go into development?
- Who monitors technical quality and architecture?
- Who communicates about delays or risks?
What happens if software maintenance is postponed for too long?
If software maintenance is postponed for too long, technical debt accumulates. This means the code becomes increasingly difficult to understand and modify, security risks grow, and new further development becomes slower and more expensive. In the worst case, the software becomes unreliable or insecure.
The consequences are not always immediately visible. A system can function for months or years without visible problems, while the underlying issues continue to grow. At some point you reach a tipping point where small changes take a disproportionate amount of time, or where a security vulnerability can no longer be patched quickly without major refactoring.
Concrete risks of deferred maintenance:
- Security vulnerabilities due to outdated dependencies or libraries
- Incompatibility with new versions of operating systems or browsers
- Higher costs for further development because the codebase is harder to understand
- Loss of knowledge when developers leave without proper documentation
- Downtime or performance issues that directly affect customers
Regular maintenance is therefore not a luxury, but an investment that keeps your future further development affordable and manageable.
How 3Bird helps with software maintenance and further development
At 3Bird, we offer a flexible approach in which we handle both maintenance and further development for you, tailored to what your software needs at any given time. Our Dutch fractional CTOs safeguard technical quality and ensure that the balance between stability and growth is maintained, while our team of experienced developers in Nepal takes care of the execution.
What we do for you:
- Provide insight into the current state of your codebase and technical debt
- Draw up a clear plan for both maintenance and new features
- Scale up and down flexibly based on what your project requires
- Communicate in Dutch, so that no misunderstandings arise about priorities or expectations
- Deploy developers from €25 per hour, for both junior and senior profiles
Whether you want to stabilize an existing system or take your software in a new direction: we are happy to think along with you. Get in touch via contact@3bird.nl or call +(31)75-7993038 and discover what we can do for your software.