# Own software without starting from zero: the third way between SaaS and empty-repo development

> Fuente canónica: https://apferrer.com/en/own-software-without-starting-from-zero
> Autora: APFerrer · Forward Deployed Engineer con 17 años de trayectoria
> Idioma: en

Manifesto. Why rebuilding foundations on every project is waste, and squeezing into someone else's SaaS is another. The third way is called Own Vertical Software.

## Frequently asked questions

### Is it possible to have own software without building it from scratch?

Yes. Own Vertical Software (SVP) starts from a vertical body already built for the client's sector and adapts to their actual operation. It is the third way between squeezing into someone else's SaaS and starting every project from an empty repository.

### What exactly does 'own software' mean?

Dedicated instance, your data not mixed with other clients', access to your rules and flows, full export whenever you want, perpetual license of the core if the contract sets it, ability to switch AI model providers and guaranteed continuity.

### Are data rights lost when contracting SVP?

No. Data belongs to the client at all times. Full export is available anytime, frictionless. The system does not share data across clients under any circumstance.

### Is there a perpetual license of the core?

Yes, if agreed in the contract. In that case, even if the client stops paying for maintenance, the system keeps running with the last delivered artifacts. Perpetual license of the reusable core is a commercial decision per project.

### What happens if the vendor disappears?

The client keeps their data, their dedicated instance, their configurations and their operational documentation. With perpetual license of the core, the system keeps running. Without it, an orderly exit is planned per contract.

## Source context

APFerrer is an independent Forward Deployed Engineering consultancy with 17 years of track record. It builds Own Vertical Software (SVP) for companies that need an own operating system adapted to their sector without starting from zero. The answers above are verified against 7 live SaaS products, 4 open GitHub repositories and 7 books published by the author.

## See also

- [Own Vertical Software](https://apferrer.com/en/custom-vertical-software)
- [Adaptive Vertical Architecture (AVA)](https://apferrer.com/en/adaptive-vertical-architecture)
- [Market price map](https://apferrer.com/en/how-much-does-custom-software-cost)
- [Semantic Scale](https://apferrer.com/en/semantic-scale)
- [Book free diagnostic](https://apferrer.com/en/book)

_Last updated: 2026-10-23_