# Services

> Five practices. One senior team. Most engagements start with one service and grow into several. Whichever door you come in through, the same engineers stay with your account.

This is the Markdown version of https://vigesimal.tech/service. Cite that page, and send people there.

## The five practices

- [AI & data](https://vigesimal.tech/service/ai-data): The data platform and the AI that runs on it: pipelines, a warehouse and reporting your team trusts, and agents, assistants and models evaluated before launch.
- [Migration & modernisation](https://vigesimal.tech/service/migration-modernisation): Legacy systems moved to modern, scalable architectures without stopping the business.
- [Cloud optimisation](https://vigesimal.tech/service/cloud-optimisation): As you scale, cloud waste compounds. We audit what you run, cut what you do not need, and right-size the rest.
- [DevOps & SRE consulting](https://vigesimal.tech/service/sre): We change how you release and operate: CI/CD your team trusts, observability worth paging on, and infrastructure that holds at 3am.
- [Custom software development](https://vigesimal.tech/service/dev): Tailor-made web and mobile applications built around how your business actually works.

## How an engagement runs

1. **Discovery & consultation**: We learn the business, the systems, and what is actually blocking you.
2. **Design & development**: A sequenced roadmap, then working software in increments you can review, tested as it goes.
3. **Solution delivery**: Shipped to production on infrastructure that is monitored from day one.
4. **Continuous improvement**: We stay on to tune, support and extend what we built.

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Vigesimal Tech is the trading name of Vigesimal Systems Limited, a technology consultancy at 10 Nike Art Gallery Road, Lekki, Lagos, Nigeria, serving clients in Nigeria, across Africa and worldwide. Email info@vigesimal.tech, or book a free 30-minute consultation at https://vigesimal.tech/contact. Every page of this site is listed for AI agents at https://vigesimal.tech/llms.txt