The main scenario determines the budget
An appointment service, document generator, and collaboration platform may have similar registration and payment pages, but their complexity is different. Describe the action for which the user pays: what he enters, what result he gets, and where this result is stored. It is this part that usually determines the scope of development.
Add failure scenarios: no data, limit exceeded, external API did not respond, payment was delayed. The first version may be small, but the user should understand what is happening. Savings by not having access checks or backups creates debt after launch.
What does the assessment consist of?
| Part | What to clarify |
|---|---|
| Main function | Login options, errors, processing times |
| Users | Personal accounts, teams and roles |
| Subscription | Tariffs, limits, trial period, cancellation |
| Integrations | Available APIs and liability for failures |
| Operation | Hosting, copies, observability and support |
What is wise to put off?
A complex affiliate program, dozens of tariffs, a separate mobile application and detailed decorative reports can often be considered the first version. But the ability to complete the main task, save data and contact support should be present at the start.
It is useful to set limits right away, even if there is only one tariff. For example, the number of employees, projects or operations. In this case, the rules are checked on the server: a hidden button in the interface does not protect the paid function.
Development and monthly costs
Separately count the infrastructure, mail, payment provider, file processing and AI model, if used. The request price and the number of active users affect the economy. You should not transfer a single test to a forecast for the entire month without measuring the load.
Maintenance includes updates, response to errors and verification of backup copies. New features are development related. It is useful to separate the support of the existing version and the creation of the next module in the contract, so as not to consider them as one dimensionless service.
How to compare estimates
- The same composition of the first version and the same acceptance criteria.
- Explicit Third Party Limitations and Expenses.
- Verification of payment, access and separation of customer data.
- Transfer of source codes and launch instructions.
- The procedure for eliminating errors and the cost of changes after acceptance.
In globall.dev SaaS development starts Quote on request. This is a starting point, not a universal price for any service. On the page MVP development the stages are described; We will draw up an exact budget after analyzing your main function.
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