> ## Documentation Index > Fetch the complete documentation index at: https://docs.paradime.io/llms.txt > Use this file to discover all available pages before exploring further. # Monitoring and discovery > How Radar, Catalog, and Lineage work together to answer three questions: what is this data, where does it come from, and what is it costing us? Once pipelines are running, three questions come up every day: *what does this data mean*, *where does it come from*, and *is everything healthy and affordable*? Three apps answer them. ## Catalog: what is this data? The **Catalog** is the searchable index of your data assets. It pulls together your dbt™ documentation, column descriptions, tests, and metadata from connected tools so anyone on the team can find a model and understand it without reading SQL. The quality of the Catalog reflects the quality of your dbt™ docs; teams often use [DinoAI](/guides/foundations/what-is-dinoai) to backfill descriptions at scale. ## Lineage: where does it come from? **Lineage** draws the dependency graph of your data: from raw sources, through staging and marts models, out to the dashboards that consume them. Use it to answer impact questions ("what breaks if I change this column?") and provenance questions ("which source feeds this number?"). Developers also get lineage inside the Code IDE while editing, including column-level lineage on supported integrations. ## Radar: is it healthy and affordable? **Radar** is observability for your data platform: * **Cost management**: where your Snowflake or BigQuery spend goes, and which models or queries drive it. * **dbt™ monitoring**: run health, failures, and test results over time. * **BI monitoring** and **team efficiency**: how dashboards and the team itself are performing. * **Real-time alerting**: get told when something crosses a line, before a stakeholder does. ## Who uses these These three apps are fully available to **read-only (Business) users**, which makes them the natural home for analysts, stakeholders, and anyone who consumes data without writing dbt™ code. ## Where to go next Find and explore assets, asset details, and lineage. Cost management, monitoring, and alerting reference. ## Related topics - [For read-only users](/start-here/quickstart/for-read-only-users.md) - [Foundations](/guides/foundations/index.md) - [Discovery API](/developers/graphql-api/api-reference/discovery-api.md) - [dbt Discovery Tools](/products/dino-ai/tools-and-features/dbt-discovery-tools.md) - [BI Monitoring](/products/radar/bi-monitoring/index.md)