Types of System Integration: Methods, Patterns and When to Use Each

“We need to integrate them.”

Monday at Sandline. Karim hears this just before a deadline. He puts down his coffee.

Which systems? What needs to move, and who fixes it when it stops?

The types of integration in business answer two questions. How do you reach each system? How do the routes fit together?

Let's draw both.

Types of integration in business: two choices

System integration means linking separate systems to share data or do a job together. Think of a delivery.

Choosing a van says how the parcel travels. It doesn't plan the stops.

Beezr's technique × architecture model splits those choices. It's our model, not an industry standard.

Technique means how you get data in or out. Architecture means how the whole set of connections fits together.

Two terms need care. An SDK helps a developer write the connection.

An iPaaS hosts and manages flows. Neither is a wire protocol.

Which integration methods fit your systems?

Start with what each system lets you do. One method won't fit every job.

Think about the handoff first. Can the data wait for a file?

Does the next system let you ask for the job you need? Is a page the only way in?

Here are the routes and their catches. Start with the one your system supports. Check the real inputs and outputs before you promise a result.

Point-to-point vs middleware: how do routes fit?

With point-to-point, one system talks straight to another. It can suit two systems with a narrow job and clear owners. Lots of direct links can become a jungle.

Don't count boxes alone. Count which routes rely on each other.

Where do you map the same fields twice? Who fixes each failed path?

Adding one system doesn't mean you must redesign it all.

Middleware puts shared work between apps. Think of a pipe with a traffic officer directing each request. It can share translation, routing and connection management.

The shared layer needs an owner too. An enterprise service bus, or ESB, is one older approach. Middleware is the broader idea, not one product.

Publish-subscribe sends news through a middle layer, like a broker or event bus. Those who want the news sign up for it. Think of a noticeboard: pin the notice, then walk away.

The sender needn't wait for each reader to finish. Each must track its own work and deal with repeats and failures. Microsoft's pattern guide warns that news can arrive twice or out of order, depending on the delivery guarantee.

Here, “event-driven” means that style. These choices can mix: a webhook can feed middleware, middleware can publish events, and files can feed direct links.

What are Sandline's system integration examples?

Sandline sells safety and packaging supplies from Dubai. Its records and workflows run in Beezr. Each route has a different job.

The store sends events. Accounting needs a posting action. Yousef's warehouse PC in Jebel Ali must release stock counts.

Lumen Gloves sends Excel prices. Why make all four use the same route?

How should you choose a route?

This matrix is Beezr's selection guidance. It isn't a benchmark or industry standard. Each arrangement is a possible choice, not a required pairing.

What should you bring to the meeting?

Write one card per route. Where does it start, and what should the other end do? Note the IDs and how fresh the data must be.

What proves the work is done? Who fixes it if it fails? Test a repeat, bad input and a call when the other end is down.

For the warehouse, start with nightly stock counts: SKU, bin and unit. The no-API guide works through that choice.

Sandline Supplies is a fictional example company.