# Three teams each have a small daily pipeline (Postgres source, an orchestrator-slot transform in the Canonical URL: Domain: Pipeline Design ยท Difficulty: medium ## Problem Three teams each have a small daily pipeline (Postgres source, an orchestrator-slot transform in the middle, a Snowflake mart, a Looker dashboard). Every row is wired correctly except the middle orchestrator slot, which carries the placeholder tech_label TBD. Each team's slot name encodes the section's selection signal for that team. Team A is a 60-engineer enterprise that already runs Cloud Composer with eighty stable DAGs. Team B is a Series A new build that wants software-defined assets and queryable lineage from the orchestrator metadata. Team C is a midsize fintech that needs workers in its own VPC with the orchestrator running as managed SaaS (a hybrid cloud-control plane). Apply the section's three selection rules and tag each orchestrator slot with the brand the section names for that signal: Airflow when an existing Airflow / Cloud Composer / MWAA deployment is in the stack; Dagster when asset lineage and software-defined assets matter; Prefect when a hybrid cloud-control plane with workers in own infrastructure is preferred. Set each orchestrator slot's tech_label to one of Airflow, Dagster, or Prefect (or for Team A, Cloud Composer or MWAA also accepted as managed-Airflow flavors named in the section). Do not add new orchestrator nodes; tag the three existing slots. ## Related - [All practice problems](https://datadriven.io/problems) - [Mock interview mode](https://datadriven.io/interview/three-teams-each-have-a-small-daily-pipeline-postgres-sourc-e9c13744) - [System Design Interview Questions](https://datadriven.io/data-engineering-system-design) - [Data Engineering Interview Prep Guide](https://datadriven.io/data-engineer-interview-prep) - [Daily Challenge](https://datadriven.io/daily) --- Source: DataDriven (https://datadriven.io). 100% free data engineering interview prep. Live code execution against Postgres 16, Python 3.11, and Spark sandboxes. No paywall, no premium tier, no signup gate.