COTECHNICAL DELIVERY LAB
CASE STUDY 01 · ENTERPRISE INTEGRATION

Reliable sync.
Visible decisions.

An interactive event-processing simulation for CRM integrations. Replay updates, deduplicate contacts, surface conflicts and inspect every decision before data changes.

● SIMULATION READYNo real CRM connections · Synthetic records
REFERENCE ARCHITECTURE
CRM AEvent feed
→
Sync policyValidate · merge
→
CRM BContact view
Identity policyEmail normalization
Conflict strategyLatest timestamp / flag ties
Resiliency principleIdempotent replay
OPERATIONS CONSOLE

Event processing playground

Try each scenario to see how the integration behaves under pressure.

Indexed contacts
3
After normalization
Events processed
0
Across simulated batches
Updates / creates
0
Accepted changes
Conflicts / rejected
0
Require review

Run a scenario

Choose a reproducible event sequence; no external services are called.

Waiting for first batch
Start with four simulated CRM events: one repeat, one update, one new contact and one stale record.

Current contact index

Deduplicated, timestamp-aware contact view.

ContactOrganizationLast changed (UTC)

Decision audit

Why each event was accepted, ignored or flagged.

No events yet. Run a scenario to inspect the audit trail.
ENGINEERING TRADEOFFS

What happens in production?

◇

Identity & deduplication

Normalize email addresses before matching. Production systems may need an external master ID and merge-review queues.

⟳

Idempotency & retries

Identical events produce no duplicate writes. A real integration additionally needs durable event IDs, retries and rate-limit handling.

⚑

Conflict transparency

Stale updates are rejected; equal-time conflicting changes are flagged for human review rather than silently overwriting data.

This is a browser simulation backed by a separate Python reference implementation. It does not connect to Zoho, HubSpot, KMOV or customer systems.