Enterprise Integrations (APIM + Service Bus + Event Grid + Logic Apps)

Category: Integration

Architecture diagram

High-level view of the main components and data/control flows.

Low-level architecture diagram (Visio-style)

Implementation view (networking, security, ops). Click to open full size.

Low-level architecture details

Step-by-step implementation

Step 1/6

Define event contracts and integration standards

• Define canonical event schema and versioning.
• Decide event vs command patterns.
• Define retry/DLQ and poison message handling.

Validation checklist

• Stakeholders have signed off the scope, SLAs, and data/security requirements.
• You have documented naming standards, environments, and ownership (RACI).

Step 2/6

Provision messaging backbone

• Create Event Grid topics for pub/sub.
• Create Service Bus namespaces, queues, topics, subscriptions.
• Enable DLQ and duplicate detection where needed.

Validation checklist

• Connections/authentication succeed and test messages/records flow through.
• Retries/DLQ/error handling are configured and validated with a forced failure.

Step 3/6

Secure with identities and private networking

• Use managed identity for consumers/producers.
• Use Private Link for Service Bus/APIM where required.
• Apply RBAC and minimum sender/receiver roles.

Validation checklist

• Security baseline applied (Defender/Policy/WAF/Firewall rules as applicable).
• No public endpoints unless explicitly approved; private endpoints verified where applicable.
• Alerts are configured for high-risk events.

Step 4/6

Implement workflows and APIs

• Use Logic Apps for orchestration and human approvals.
• Expose stable APIs via APIM; keep internal endpoints private.
• Add transformation mappings (JSON ↔ XML) where required.

Validation checklist

• Deployment completed; smoke tests passed; rollback plan confirmed.

Step 5/6

Observability

• Centralize logs to Log Analytics.
• Track message throughput, DLQ depth, and latency.
• Create dashboards for business KPIs (events processed).

Validation checklist

• Logs and metrics are flowing (check Log Analytics / Monitor).
• Alerts trigger correctly (test alert path to email/Teams/ITSM).

Step 6/6

Resilience testing

• Chaos test: drop consumers, verify DLQ and retries.
• Load test API gateways and queues.
• Validate schema evolution and backward compatibility.

Validation checklist

• UAT completed with representative users and scenarios.
• Performance meets baseline; issues tracked and remediated.

Video tutorials

• Azure Integration Services Day
• Azure Friday (search for APIM/Service Bus/Event Grid)

References

• Event Grid documentation
• Service Bus documentation
• API Management documentation