Microservices Vs ESB | Mircorservices – Macro Benefits

Microservices Vs ESB

Let’s start with a simple definition of both concepts:

“An  is basically the integration of the new and the old, providing a central place for the services, applications, and IT resources in general that you want to connect.”


“A microservice architecture (vs. the legacy monolithic architecture) is an approach to developing a software application as a series of small services, each running autonomously and communicating with one another, for example through HTTP requests to their APIs.”


Microservices have called into question the future of ESB. But how does the new architecture trend really affect Enterprise Service Bus?

It seems that the Microservices have arrived to stay. More and more CIOs want to install this type of architecture to their projects. Microservices are perceived as the future of doing business. Many believe that it is a generational change promoted by the “Digital Transformation” and think that ESB is becoming obsolete. Are they right? Are micro-services the new era of SOA? Definitely. You have to take them into account. But for ESBs, no, they are still alive. We must adapt our concept of this architecture and can no longer understand the Integration Bus as a centralized and inflexible concrete structure for the whole company. When we talk about them today, we should think of a flexible, scalable and well-distributed infrastructure in which we can incorporate, implement and monitor any type of service in an agile and efficient way.

The ESB must fulfill a function of integration, coordination, routing and monitoring of the business activity. Understanding the ESB in this way, we can build applications through services or  to solve the requirements and needs of a company. The services must be treated in an individualized way with a standardized interface to a platform with automatically scalable execution time. Thus, these services are decoupled and scaled in a linear fashion on non-specialized hardware. This is the best way to understand an Enterprise Service Bus today. Microservices do not mean the death of ESBs if the latter are used in a suitable way. That is to say, focusing on an architecture where services are the protagonists and not in a centralized architecture towards the Integration Bus itself.

About this tool, we must not forget to integrate a gateway of services for security and exposure of services as API Gateway to external consumers. The services gateway can direct the integration of integrated services into the Bus, external service applications and cloud services. Finally, we have to think twice if we really need this type of architecture. An Entreprise Service Bus only makes sense if our goal is to coordinate the actions or events that are happening in our services from a set of heterogeneous systems that we must integrate and present to the upper layers.

In conclusion, we can definitely assert that microservices do not make ESB an obsolete technology. In fact, both are perfectly compatible and can function in a coordinated way. Of course, for them, we must ensure that we work with a correct and updated Business Services Bus concept. If so, microservices together with ESB are a winning combination. They have not come to deprecate them, at most, they have come to be their accomplices to get a critical support architecture to the business!

Microservices Macro Benefits

Instead of an antiquated, monolithic system in which stability requires each component to function perfectly, microservices operate independently from one another to provide unparalleled reliability.

Displace Dissonance with Microservices

Wolfgang Amadeus Mozart died more than 200 years ago, yet his music lives on—his work still influences other musicians. While generally he’s considered an archetype of classical music, he dabbled in other areas. Being nimble and adaptable ensured his legacy.

Microservices were also developed to withstand changes throughout time. Building your call center system on an agile platform prepares your business for shake ups. Whether it’s a change in technology or customer demands for communication on a new channel, your system is prepared to adjust to meet these needs. While the benefits are numerous, they can be broken into three main attributes: scalability, reliability and flexibility.


A microservice architecture enables system scalability. Because each microservice operates independently, it can scale up or down to match current demand. Even if one tenant needs to send a million faxes suddenly, it won’t affect the functionality of other tenants. Similarly, if your data indicates you should increase the number of outbound calls at your contact center, your system will not experience delays or strain with added volume.

This scalability works regardless of size. Whether your organization has 10 users or 100,000 users, a microservices architecture meets your needs and efficiently handles changes in demand.


With microservices, system functionality is spread across hundreds of individual components. Each microservice performs a single function; one can cover outbound calling while another handles customer routing and another handles web chat.

further reliability is added through Elastic Load Balancers (ELBs), which distribute work across multiple servers that dynamically scale based on load. Because services exist independently, a failure in one microservice will not affect others. Additionally, if a microservice fails, another is there to take its place instantly—much like the second chair musician in an orchestra.


A call center platform built on microservices doesn’t have the constraints of a proprietary data center. If your business grows, your platform expands and changes as needed. If you have a slow season, your platform can condense to help cut costs. Services can be added as needed; the ability to perform rolling updates means your technology is always up to date. Your business can meet and exceed customer expectations because you don’t need to wait for your technology to catch up