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The fan-out/fan-in pattern is a staple of more advanced API integrations. Let's check out in practice how, with Zato, it can simplify asynchronous communication across applications that do not always exhibit the same kind of availability or performance characteristics.
Today, when we talk about enterprise application integration, we cannot avoid the pervasively-used enterprise service bus (ESB) pattern, which implements a communication system between mutually interacting software applications in a service-oriented architecture (SOA) and has been adopted in most enterprise applications.
ESB can be used as an integration platform and primarily used in enterprise application integration (EAI) of heterogeneous and complex service landscapes. ESB is the backbone of SOA infrastructure. It has platform-agnostic nature and the ability to integrate with anything IT system with mixed environments.
Remember that time when your partner flagged a leak under the sink and suggested calling a plumber? "How hard can it be," you asked. A few grunts and speculative twists and bangs (and a few choice words) later, not to mention a generous application of duct tape, the leak had stopped. Disaster averted (at least until the problem resurfaced a few weeks later). And it was even worse that time. The kitchen flooded, causing more damage than Vesuvius.
DIY, unless you genuinely know what you’re doing, always comes at a cost. Sure, you can learn to become a better plumber. But plumbing is a specialty — and an expensive service — for a reason. On average, it takes nearly a decade to learn the ins and out of the trade.