## [Alliance SwissPass](https://allianceswisspass.ch) Switzerland's public transport industry organization — coordinating tariffs, ticketing, and standards across the entire Swiss transit network.

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Challenges and opportunities in building a centralized data science environment for the public transport industry GovTech Lab Luxembourg: 11ème Rencontre Data Science de l'État — 20 March 2026 [philipp.baumann@allianceswisspass.ch](mailto:philipp.baumann@allianceswisspass.ch)

https://allianceswisspass.ch --- ## Agenda - Why a centralized data science environment? Teams and roles - Infrastructure: deploy FLOSS-based services in Azure - Integrating full-stack data science tooling and development workflows --- ## [Data Strategy](https://strategie.allianceswisspass.ch/main/)

--- ## DSE: How it started

2025-01

--- ## DSE: How it's going

2026-03: Continuous work on integrating overarching data infrastructure, project tooling, modular package ecosystems around core business processes and advanced analytics

Avoid lock-ins: shift to Open/FLOSS IT technologies! — ongoing extensions, e.g., Lakehouse component

--- ## Infrastructure-as-Code

Open-source infrastructure provisioning — used to manage compute, storage, and networking resources in the DSE. --- ## Centralized DSE:
Philosophy

The Data Science Environment (DSE) provides a centralized platform for data analysis, collaboration, and deployment at Alliance SwissPass. Each project receives its own set of resources, all managed through infrastructure-as-code.

- Git repositories - CI/CD runners - Compute environments - Storage Containers --- ## Container-based CI/CD

Crow CI: Fast and resource-efficient CI/CD ```yaml when: - event: manual evaluate: 'task == "docs"' - event: pull_request - event: push branch: - ${CI_REPO_DEFAULT_BRANCH} steps: astro-build: image: docker.io/oven/bun:1-alpine pull: true commands: - bun install --frozen-lockfile - bun run build 'Move to host': image: docker.io/library/alpine:3.23 volumes: - /mnt/dse-doc:/mnt/dse-doc commands: - apk add -q --no-cache rsync - rsync -a dist/* /mnt/dse-doc/ when: - event: push branch: - ${CI_REPO_DEFAULT_BRANCH} ``` --- ## R and Python

### R [Rich and stable package ecosystem](https://cran.r-project.org/). Use for revenue distribution redesign. Embed Python modules?

### Python uv and [polars](https://pola.rs/). Integrate container and storage access tools.

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### Roles of Alliance SwissPass organization - Coordinate tariffs and regulations across all providers - Data roles and analytics needs for projects at the headquarters: - Drive innovation (e.g., [**myRIDE**](https://www.myride.ch/de/index.html) new centralized E-tariff) - Core business processes. Renovate revenue distribution: flat-rate subscription tickets (e.g., General Season Ticket; Swiss GA)

### Broader Context - Industry body for Switzerland's entire public transport network: uniting ~250 transport companies - Multi-lingual (DE / FR / IT) - Strategic framework: [**Strategie 2035**](https://strategie.allianceswisspass.ch/main/)

--- ## Thank You Questions?