No, it's not a monster data warehouse with some analytics running on top of it.
Effective real-time data aggregations need multiple capabilities working in tandem, including a simple way to ingest the data from multiple sources in multiple formats, quickly build and deploy data aggregators into a pipeline and pull appropriate data, and a clear strategy on how that aggregated data will be utilized and surfaced for interpretation.
Model your data ingestion strategy and quickly add additional data sources.
Make sure you have the capability to quickly build aggregation services that tap into incoming data.
Build out your data perspectives. Surface them to consumers. Move your ingested data for long time storage and replay capability.