SAP Integration Landscape
No company runs only one piece of software. A mid-sized business typically uses SAP for finance and inventory, Salesforce for managing customers, Workday for HR, and perhaps a custom-built website for online sales. These systems were built by different companies, store data in different formats, and speak different technical languages. Without a connector between them, staff must manually copy data from one system into another — which takes time and introduces errors.
SAP Integration is the practice of building automated connectors so these systems exchange data without human intervention. When a customer buys a product online, SAP automatically receives the order, updates the inventory, triggers shipping, and creates an invoice — all in seconds, with no one typing anything.
A Real-World Analogy
Imagine a large airport. Airlines, customs, baggage handling, immigration, and the duty-free shops all operate independently. Each has its own systems and rules. But when your flight lands, they all need to share information:
- The airline tells immigration you have arrived
- Immigration tells customs your passport is cleared
- Baggage handling tells you which belt your luggage is on
Nobody calls each department manually for every passenger. The airport has an integration layer that automatically routes information to the right place at the right time. SAP Integration is the same concept for business systems.
What Integration Actually Does
At its simplest, integration does four things:
Step 1: TRIGGER → Something happens in System A
Example: Customer places an order in Shopify
Step 2: COLLECT → Integration picks up the data
Example: Order details (name, items, address) extracted
Step 3: TRANSFORM → Data is converted to SAP's format
Example: Shopify "product_id" becomes SAP "material number"
Step 4: DELIVER → Data lands in the target system
Example: SAP creates a sales order automatically
These four steps — trigger, collect, transform, deliver — describe every integration scenario you will ever build. A payroll run, a supplier invoice, an IoT sensor alert — all of them follow this same pattern.
Point-to-Point vs Middleware Integration
There are two fundamental ways to connect systems.
Point-to-Point Integration
System A writes a direct connector to System B. If you have three systems, you need three connectors. If you have ten systems, you need up to 45 direct connectors. Each new system multiplies the complexity.
[Salesforce] ←→ [SAP] [Salesforce] ←→ [Workday] [Salesforce] ←→ [Shopify] [SAP] ←→ [Workday] [SAP] ←→ [Shopify] [Workday] ←→ [Shopify] 6 connectors for just 4 systems
Point-to-point integration becomes a maintenance nightmare. When SAP changes its API, every connector to SAP breaks. A developer must fix six connectors instead of one.
Middleware Integration
A central integration platform sits in the middle. Every system connects to this one platform. The platform handles routing, transformation, and delivery.
[Salesforce] ──┐ [Workday] ──┤ [Shopify] ──┤──→ [SAP Integration Suite] ──→ [SAP] [Warehouse] ──┤ [Bank] ──┘ 5 connectors regardless of how many systems you add
When SAP changes its API, you update only one connector in the middleware — not five. Every other system continues working normally. SAP Integration Suite is the middleware platform you will learn in this course.
Types of Integration
Synchronous Integration
System A sends a request and waits for an immediate response from System B before continuing. Like a phone call — you ask a question and wait for the answer before saying the next thing.
Use this when the calling system needs the result before it can proceed. Example: A checkout form on a website calls SAP to check if a product is in stock. The page waits for the answer before showing the user a confirmation.
Asynchronous Integration
System A sends data and does not wait for a response. Like sending a text message — you send it and move on. The other person replies later.
Use this when the result is not needed immediately. Example: An e-commerce site sends 500 orders to SAP at midnight. SAP processes them over the next hour. The website does not need to wait.
Batch Integration
Data accumulates over a period and then transfers all at once. A bank might send a file of all transactions that occurred during the day, once per night.
Event-Driven Integration
An event in one system triggers an action in another. A new employee record created in HR automatically sends a welcome email, creates a user account in IT, and opens a payroll record in SAP — all triggered by one event.
Common SAP Integration Scenarios
- Order-to-Cash: Customer order flows from e-commerce into SAP SD, triggers delivery, and posts a billing document in FI
- Procure-to-Pay: Purchase requisition in SAP triggers a purchase order to the supplier, who sends an invoice back, and SAP pays automatically
- Employee Data Sync: New hire in SuccessFactors automatically creates an employee record in SAP payroll
- Bank Statement Reconciliation: Bank sends daily statement, integration posts payments to open invoices in SAP FI
- IoT to Maintenance: Machine sensor detects fault and integration automatically creates a maintenance order in SAP PM
Tools SAP Provides for Integration
SAP offers several tools depending on the integration scenario:
- SAP Integration Suite – The main cloud-based integration platform. This is the primary tool in this course.
- SAP Process Orchestration (PO) – The older, on-premise integration platform. Many companies still run it.
- SAP Data Services – For batch data movement and transformation, especially for data warehouse loading.
- SAP Event Mesh – For event-driven integration where systems react to events rather than scheduled transfers.
Understanding what each tool does and when to use it will make you a more effective integration developer. This course covers SAP Integration Suite in depth, with references to the older PO tools where relevant.