Short answer: A well-managed custom software project goes through five stages: requirements analysis, scope and design, iterative development (usually 1–2-week cycles with regular demos), testing and data migration, and go-live and support. Getting the first working version into users' hands as early as possible minimizes the risk of heading in the wrong direction.
1. Requirements analysis: What are we solving?
The first stage is about the business, not the software. How does the process work today, who writes which information where, where is time being lost, and which report is missing? In these conversations, your existing Excel files, forms and screenshots are the most valuable input.
What's expected of you: Having the people who really know the process take part in the discussions, not just the manager, but also the employees who will use the system every day.
2. Scope and design: What are we building, and in what order?
Based on the analysis, the modules and screens are listed, and each is classified as either "must-have in the first version" or "for a later phase." This distinction is the decision that affects the project timeline the most. Next, drafts of the key screens are prepared and reviewed together with users.
What's expected of you: Making clear decisions on priorities. When everything is expected in the first version, the project takes longer and feedback comes late.
3. Iterative development: A working piece every week
The software isn't delivered in one go; it's developed in short cycles, and a working piece is shown at the end of each cycle. This way, a misunderstood requirement is spotted within days, not months later.
| What happens in a cycle? | Why does it matter? |
|---|---|
| The planned features are developed | Progress is tangible and visible |
| They are shown in a demo environment | Feedback comes early |
| Feedback is added to the next cycle | Scope is updated in a controlled way |
What's expected of you: Attending the demos and giving feedback without delay.
4. Testing and data migration
Testing is done with real users and data that is close to real. Data from your existing Excel files or legacy system is cleaned up and migrated to the new system; this step often takes longer than expected, because inconsistencies in the old data come to light at this stage. For more detail, see our article on moving from Excel to software.
5. Go-live and support
The system is opened for use and users receive short training sessions. It's normal for small fixes and improvement requests to come in during the first weeks. Software doesn't end at delivery; a maintenance model covering backups, security updates and new needs should be planned from the start.
What determines the project timeline?
- Number and complexity of modules: A simple record-tracking system and a system that combines accounting, inventory and reporting won't be finished in the same amount of time.
- Integrations: Connections to e-invoicing (Turkey's mandatory electronic invoice system), banks, accounting software, WhatsApp or existing systems add to the timeline.
- Data migration: The volume and cleanliness of the old data.
- Decision speed: How quickly feedback and approvals are given.
For a typical management system, the first working version is usually ready within a few weeks; multi-module systems are completed in phases over a few months.
Why start with a small version?
Once users start using the first version, needs emerge that even the best analysis couldn't foresee. Starting with a small but useful version both protects your budget and allows later phases to be shaped by real-world usage. If you're comparing this with off-the-shelf software, our article Custom vs. Off-the-Shelf Software will help you decide.
Considering software tailored to your business? With our custom software development service, we run the process together with you, from requirements analysis to go-live and the support that follows.
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Frequently Asked Questions
No. All that's expected of you is to explain your business and your processes. Technical decisions and their consequences are explained in plain language.
New requests are evaluated and added to the priority list. Requests that expand the scope are discussed along with their impact on timeline and budget, and are added to the plan with your approval.
Usually the team that built it continues under a maintenance and support agreement. If the source code and documentation have been handed over to you, another team can also take over maintenance; this should be clarified in the contract from the start.