Enterprise Software Development

What is enterprise software and what does it cover?

Enterprise software is less about the product a company sells and more about how work gets done inside it. It governs how a request passes from one person to the next, where records are kept and where a manager finds the figure they need. Instead of the process an off-the-shelf package assumes, it puts your real process on screen.

UNIT İstanbul provides custom software development for companies' internal processes through its software unit, Unit Software. The enterprise software work described on this page falls into these areas:

• Operations and management dashboards: Panels that bring order, stock, service, field team or project tracking onto one screen, showing each role what it needs.
• Workflow and approval automation: Flows that put purchase requests, leave and expense approvals, contract and quote sign-offs under clear rules and chase whatever is overdue.
• Integrations: Data moving between ERP, CRM, accounting, e-invoicing, HR and warehouse systems without anyone re-keying it.
• Reporting and data dashboards: Dashboards that combine data from different systems under a single definition, so management can decide with confidence.
• Access and role management: A logged permission structure that defines who can see, change and approve what.
• Modernisation: Phased replacement of legacy systems that are out of support, understood by only one person or no longer able to carry growth.

Portals for your dealers, suppliers or business customers, and B2B ordering systems, are a separate subject; we cover them on our B2B software page. If you want to add AI features such as text classification, document reading or assistants to internal processes, see AI integration.

How do you know your company needs custom software?

Not every inefficiency is solved by software; sometimes the problem lies in how a process is defined, sometimes in training, sometimes in a tool that was set up badly. Still, certain signs strongly suggest that internal processes are ready for software support:

• The same data is typed into more than one system or spreadsheet, and the records don't match.
• Finding out where an approval is stuck means picking up the phone or digging through an email chain.
• The month-end report has turned into a compilation job that takes several people days.
• Your off-the-shelf software doesn't support an important step in your business, and the team fills the gap with side files.
• A critical system depends on the knowledge of a single employee or a vendor you can no longer reach.
• For audits or KVKK (Turkey's data protection law), you cannot show who accessed which personal data.

If several of these signs appear together, the first step is to map the process and see at which step the problem builds up. The software decision comes after that map.

Off-the-shelf or custom software?

The honest answer is often "both". In areas that work much the same in every company, such as accounting, payroll or general ERP, mature off-the-shelf products usually make more sense. In processes that are specific to you and set you apart from competitors, custom software makes the difference.

The route we often recommend is a hybrid: the off-the-shelf ERP or CRM stays in place, and company-specific processes are handled by a custom layer built on top. That way you close the gaps without rewriting a strong core system.

How are ERP, CRM and accounting integrations built?

Integration is not just two systems sending each other data; the real work is deciding which system counts as the "truth" for which data. Does the customer record belong to the CRM or the ERP? Where is a product's price updated? Integrations built before these questions are answered soon produce conflicting records.

1. 1.A source system is chosen for each data type and recorded in a written data dictionary.
2. 2.The connection method is chosen: the vendor's API, event notifications (webhooks), database views or, as a last resort, scheduled file transfers.
3. 3.Field mappings, unit and currency conversions and rules for missing data are defined.
4. 4.Failure cases are designed: failed transfers are retried, records that cannot be resolved are flagged to an owner, and no data is lost silently.
5. 5.Every transfer is logged, and the health of each integration is tracked on a monitoring dashboard.

The connection options of local accounting and e-invoicing software vary widely by vendor. That is why, during discovery, we verify in a test environment what each system really allows rather than planning on assumptions.

How can legacy systems be modernised without downtime?

Switching off an old system overnight and turning on a new one is the riskiest path in enterprise software. The safer approach is to replace the system function by function: the module that causes the most trouble or creates the most value moves to the new structure first, while the old system keeps running the rest.

During this process, the two systems run in parallel for a while and their outputs are compared. Data migration is planned as a separate piece of work: cleaning and transforming the old data, trial migrations and a rollback plan. Because users move to the new screens in stages, the training load is spread out too.

How are security and KVKK handled in enterprise software?

Internal systems process a lot of personal data about employees, customers and suppliers. Security is therefore part of the architecture, not a layer added once development is finished.

• Role-based access control: each user sees and changes only the data their job requires.
• Single sign-on (SSO) with the company's existing identity system, plus two-factor authentication.
• Tamper-proof audit logs that answer who changed what, and when.
• Encryption of data in transit and at rest; secret keys kept separate from the code.
• Collecting no more personal data than needed, defining retention periods and deleting or anonymising data once they expire.
• Regular dependency updates and security scans.

KVKK compliance is not purely technical; decisions such as privacy notices, whether explicit consent is needed and cross-border data transfers require legal assessment. We implement the technical side of these decisions and work from the same document as your legal adviser.

Should enterprise software run in the cloud or on premises?

Cloud infrastructure offers easy scaling, backups and maintenance; on-premises servers are preferred in some sectors because of data residency or existing investments. Where personal data needs to stay in Turkey, providers with data centres in the country can be considered.

Whichever option you choose, some principles stay the same: test and production environments are kept separate, infrastructure is defined in code so it can be rebuilt, backups are taken regularly and restoring from backup is actually tested. Infrastructure accounts are opened in your company's name.

What determines the cost of enterprise software development?

The price of enterprise software depends less on the number of screens and more on the complexity of the process and the systems to be connected. These are the main factors behind a quote:

• How many processes and user roles are covered, and how much the approval rules branch.
• The systems to be integrated and how mature their connection options are.
• The volume and cleanliness of the data to be migrated from the old system.
• Security, logging and regulatory requirements.
• The hosting choice and the expected level of availability.
• The scope of post-launch maintenance and development.

Rather than pricing a large project in one go, we suggest a short discovery phase followed by a phased plan that starts with the most valuable module. You see a return on the investment early and plan the next phases with real usage data.

How do you measure the success of enterprise software?

As a software team that comes from marketing, we start every job with measurement. Before the project, we record the current state together: how long it takes to approve a request, how many people's effort the month-end report takes, how often manual data entry produces errors. After launch, we track the same indicators from the software's own logs and report on them regularly.

Adoption is a measure of success too. We track whether teams actually use the new system, which screens they get stuck on and whether they drift back to side files, and we use that to prioritise the next round of development. You can find the work and references of Unit Software on our software page.

How do maintenance and support work after launch?

Enterprise software is a system that keeps changing along with the company. The maintenance plan covers security updates, keeping up with changes in integrated systems, bug fixes, performance monitoring and development capacity set aside for new needs. Support requests come through a single channel, and priority levels and response expectations are defined in writing in the contract.

If your field teams need a mobile app, see mobile app development; if collection or payment steps are being added to your internal systems, see payment architecture. To talk about what you need, write to us from the contact page.