In broader terms, an Enterprise Service Bus can be defined as an architecture which helps to integrate different applications together over a bus imitating infrastructure. The core concept of the ESB platform is to enable a communicative bus which allows the applications to speak to it as well as amongst themselves- This functionality disengages the applications thus allowing them to freely communicate with each other and that too without being dependent upon the knowledge of the other systems attached to the bus.
The Enterprise Service Bus was introduced with a sole purpose of doing away with the point-to-point communication systems which often became rigid and thus difficult to manage with time. As the count of applications increased, more custom integration codes where required, this led to the operational complexity- In the absence of any central mechanism, ability to troubleshoot the issues and manage the application functionality became tough. With the introduction of ESB, however, the application dependencies got decoupled.
How ESB Impacts the Organizations
Many companies nowadays prefer to implement ESB at the foundation of their IT infrastructure- The platform greatly helps in augmenting the organizational agility besides considerably reducing the required timeline to market new projects.
ESB does so by enhancing the scalability with the help of a simple and pluggable mechanism. Besides this, you also get to leverage your existing systems while introducing new applications on the go- all this and more has become possible due to the communicative and transformative abilities of the Enterprise Service Bus.
Things to Consider While Implementing ESB
- Lightweight: Some ESBs are available at as less as 40 MB on fully being fully loaded, apart from having stripping capabilities- just in case you want to scale down a bit, you can absolutely do so by removing unwanted modules. However, being lightweight is not just about the size of ESB, in fact, it has more to do with the finances that you would need to pump in, in order to implement the changes in the functional integrations and it is also about the amount of hard work that you’ll need to put, in order to pull off the desired results.
- More than the communication functionality: ESB should not be entirely seen in the light of being a mediator between different applications which are plugged into it. You can use the platform to act as a scalable service container for publishing the services like REST besides others.
- Scalability: As per the business and operational requirements, the ESB architecture that you choose to implement as a backbone should be flexible enough to scale, both up and down.
The basic requirement with the majority of the business organizations is to have requisite agility that somehow scales down the time which is otherwise required to market the new initiatives. By implementing Enterprise Service Bus though, you are able to achieve this objective in the most simple and lucid manner possible by enabling the applications to communicate seamlessly and that too without any operational complexity.