ComposableStack.AI CDP
Back to agent
Latency Tierlatency-tier.intra-session

Intra-session (10 s – 5 min)

Streaming evaluation of the current event combined with the user's recent history; supports stochastic predictions across multiple interactions rather than a single materialized attribute lookup.

confidence 90%v1reviewed Apr 26, 2026latency, streaming, prediction, nba

Intra-session (10 s – 5 min)

Example. Next Best Action prediction.

Technical approach. The event is evaluated in combination with other information about the user. Implementation requires streaming event processing to provide a richer perspective across a larger dataset of user interactions — e.g. evaluation of recent activities in light of prior interactions over preceding days.

Why this is more expensive. Instead of comparing against a materialized user attribute, decisioning requires analysis across multiple events or stochastic prediction based on multiple criteria. Increasing data and processing power applied to the decision raises the cost-to-deliver at a given Service Level Target exponentially.

Rule of thumb. Moving an Intra-session marketing activation to Inter-page requires an order-of-magnitude increase in delivery cost. Doable, but the hardware and architecture changes required are substantial. Similarly, pushing the same transaction down into Intra-page (decisioning data moved to the client) imposes a comparable jump in complexity and cost (source.real-time-clarity-md).

Sources

Related

This node →

← Referenced by

  • instance-ofconcept.signal-to-activation-time— Latency taxonomy enumerates this tier
  • affects-cost-oflatency-tier.inter-page— Moving up one tier ≈ 10× cost increase
  • applies-to-latency-tieruse-case.next-best-action— NBA requires streaming evaluation; sits in 10s-5min tier
  • prerequisite-oftech-dim.dev-team.backend-stream-processing— Streaming team is required for intra-session activations in composable stack
  • applies-to-latency-tiercapability.identity-resolution— Identity resolution must complete within the intra-session budget to enable real-time NBA and cross-session personalization decisions.
  • applies-to-latency-tiercapability.reverse-etl— Fivetran Activations Live Syncs (GA, May 2025) enables sub-second real-time reverse ETL from BigQuery, extending composable CDP activation into the intra-session latency tier for supported CDW+destination pairs. Prior to Live Syncs GA, reverse-ETL minimum latency was approximately 15 minutes (intra-day tier). The capability now spans from the daily tier to the intra-session tier depending on the tool and CDW combination.
  • applies-to-latency-tiercapability.audience-segmentation— Real-time streaming segmentation (stream processor evaluating each event on arrival) achieves intra-session segment membership latency — the customer lands in the correct segment within seconds to minutes of the triggering event.