20+ Difference between Microservices and SOA

Today’s data-driven businesses must know how to build and release apps effectively. The conventional monolithic approach to application development and maintenance lacks the significant flexibility that options like service-oriented architecture (SOA) and microservices provide.

Though knowing which is ideal for your company requires knowing the distinctions between the two, this may be challenging.

Whereas service-oriented architecture (SOA) is a collection of modular services that “speak” to one another to enable applications and their deployment, microservices break down an application into several independent, single-function services.

Comparison Between Microservices And SOA

DefinitionMicroservices architecture, sometimes called microservices, is a method or strategy for building software applications. It entails breaking down complex programs into more manageable chunks that can nonetheless carry out their intended tasks.To put it simply, service-oriented architecture (SOA) exposes clearly defined business operations as services that may be accessed by many applications using common protocols. The use of SOA necessitates a rethinking of enterprise-wide business processes and the function of applications.
ArchitectureMicroservices are smaller, more granular services that each execute a specialized activity. They may function independently inside a microservices design, but they still interact with one another to offer service to a larger application. Microservices architectures are becoming more popular. Microservice architecture is geared toward reducing the number of resources that are used by shared services.Because the SOA’s bigger and more modular services rely on one another, it is designed to promote the sharing of resources to the maximum practicable degree. Specifically, the goal is to share resources to the greatest extent possible.
GovernanceSince each microservice operates independently, it is challenging to establish consistent data governance rules. Because of the increased latitude, this strategy allows teams to determine how their microservices should be controlled; it enables groups to improve the efficiency with which they collaborate on a project.Given that SOA is based on the concept of pooling resources, all of the services conform to the same set of data governance principles. This is for reasons that are self-explanatory and evident.
SizeAs a direct consequence of the granularity of these services, the scope of projects that use microservices may be greatly decreased, which can result in considerable cost savings. Because of the specialist nature of its services, it is especially well-suited for those who work in the programming field.The greater scale and breadth offered by SOA benefit the intricate interconnections of multiple services. Services have the potential to be interconnected using SOA, which can facilitate business-to-business collaboration and other large-scale integration endeavors.
CommunicationBecause of this, microservices are reliant on language-independent messaging technologies like application programming interfaces (APIs), which make it possible for users to talk to one another rapidly.The objective of an enterprise service bus, often known as an ESB, inside a conventional service-oriented architecture, or SOA, is to make it easier for various services to communicate with one another. It is possible that the communication between services would become more sluggish if an ESB is used in an SOA design.

The Major Difference Between Microservices And SOA

What exactly are Microservices?

Because its services are more granular and autonomous, microservice architecture is often seen as a natural progression from service-oriented architecture.

Since each service inside an app serves a unique role, the app will continue to operate normally even if one of the services fails.

Microservices consist of independently deployable modules that interact with one another via APIs and are structured to handle a specific aspect of a company’s operations.

Key Difference: Microservices

  • Classification of otherwise massive, cumbersome programs is a key component of the microservices architecture. 
  • Different microservices handle various aspects and operations inside a single application, such as data logging, searching, and more. 
  • Each of these microservices performs a specific function, collectively creating a larger, more powerful whole. 
  • Many advantages come from this naturally functional partitioning of an application. The client may request to use the user interface when interacting with the service. 
  • Therefore, tackling even the most complicated issues that need a combination of microservices is quite simple. 
  • On the other hand, microservices are services that may be released separately and are based on a business model.  
  • Individually, each microservice might stand in for a different part of an eCommerce system, such as stock or orders or delivery. 
  • Nearly nine in ten microservices adopters think the architecture will soon be as popular with executives and project managers as it is with programmers. 

What exactly is SOA?

In large part, the advent of service-oriented architecture may be traced back to frustration with conventional, monolithic software development methods.

Service-oriented architecture (SOA) deconstructs application-required components into independent service modules that coordinate their efforts to achieve predetermined business goals.

Each module is substantially smaller than a monolithic program and may be deployed to suit diverse objectives in a company. Additionally, SOA is supplied through the cloud and might comprise infrastructure, platforms, and application services.

Key Difference: SOA

  • Think about the data-oriented system architecture that is so prevalent on university campuses to get a feel for SOA. 
  • In a data-driven system, information is disseminated around the university in bulk files. Such variations might manifest as data-accuracy issues and reduce the value of data.
  • For instance, if a library wants to ensure that only full-time students are borrowing books, it may need to verify the status of potential patrons. 
  • The library would next make a request to the student records office, which, in the instance of UW-Madison, would deliver over 45,000 student records all at once. 
  • Following this, the library would import the group into its database to get the information it needs for a select few of the pupils. 
  • Since various university departments utilize different business rules, Eduventures argues that data transmitted through batch transfers may easily be misinterpreted. 
  • A student who is currently enrolled and who has paid all college fees may be considered a “current student” to use the campus recreation centers. 
  • A registered student who has not yet paid all fees may nonetheless be considered a current student for library borrowing purposes. 

Contrast Between Microservices And SOA


  • Microservices – Microservices refer to a kind of service-oriented architecture in which an application is built as a suite of related but independent services based on a certain company’s needs.

    In a microservice architecture, each individual service is responsible for a single, specialized business activity. Each microservice is in charge of its own data model and can easily share information across numerous instances.
  • SOA – When it comes to building and integrating applications, the SOA represents a transitional phase. It specifies how interfaces may be used to facilitate the reuse of program parts.

    An official definition of SOA is “an architectural strategy in which applications use network-based services.” Through a network call made available over the internet, services are made available to construct applications under this architecture.

    It uses widely used communication protocols to speed up and simplify application service integrations.

Sharing of components:

  • Microservices – By separating services into smaller, more controllable parts, microservice design lessens a system’s dependency on resource sharing and enhances its resistance to disruptions caused by service interruptions.

    Due to the necessity to share fewer components, developers can swiftly roll out changes and extend services separately. This enables them to do so much more quickly than they could use Service Oriented Architecture.
  • SOA – On the other hand, Service-Oriented Architecture, sometimes known as SOA, makes swapping components more frequently across different applications simple. To provide a little more clarity, services could use a shared Enterprise Service Bus.

    As a result of this reliance, problems with the interaction of one service with the ESB might significantly influence the running of all the services that rely on it.


  • Microservices – Because of their modular design, which makes them an outstanding option for the job at hand, microservices are especially well-suited to the task of carrying out a single concentrated aim.

    This is because of the modular structure of microservices. Because of this, they are an excellent choice for the job. When two distinct processes are combined into a single one, a single program is generated as a result of the consolidation.
  • SOA – It’s possible that some of the modular services included in a service-oriented architecture (SOA) may be as large as a single, all-encompassing application. This is something that’s definitely a possibility.

    This is something that ought to be kept in mind, so make sure you do. SOAs often cover a wider geographical region than other types of architecture do because of the scalability of the numerous services.

Data storage:

  • Microservices – It is standard practice for each service to have its own storage system when employing microservices; however, this is not always the case.

    Each service could sometimes share the same storage system depending on the circumstances. Most services that make up an SOA use the same persistent storage solution. This is often the case. This occurs rather often.
  • SOA – If all of the services provided by an SOA can access the same repository, then it will be possible for all of those services to recycle the same data.

    Businesses may be able to boost the value of their data by encouraging data and application exchange between departments.

    The capacity does, however, come with the downside of greater reliance and coupling among the services, which is a negative aspect of the capacity.


  • Microservices – The deployment of microservices is much easier and more expedient than that of service-oriented architecture.

    This is because the services included inside microservices are more condensed and self-contained than those contained within SOA. Because of these advantages, the process of designing the fundamental services that are backed by microservices becomes much less difficult.
  • SOA – Because of the interconnectedness of the services, it is required to rethink and redeploy the whole program to make room for adding a new service.

    This is the case because of the nature of the services. Due to this change, the already challenging process of implementing SOA, which already included a high degree of complexity, becomes much more so.

Frequently Asked Questions (FAQs)

Q1. Do you consider spring boot to be a microservice?

Your microservices will be able, to begin with, a minimal footprint and rapidly iterate thanks to Spring Boot.

This is why it has developed as the de facto standard for JavaTM microservices.

Use Spring Initializr to get a head start on your project, and then package everything up as a JAR file. You’ll be up and running in minutes thanks to the integrated server concept that Spring Boot provides.

Q2. Is it possible to compare a microservice to a REST API?

One of the application programming interfaces (APIs) that are used the most often in the process of constructing microservices applications is known as the “RESTful API” or simply the “REST API.”

Because it is based on HTTP instructions, which most developers are already familiar with and find relatively easy to implement, the REST Application Programming Interface (API) is a popular standard among developers. This is one of the reasons why it is so popular.

Q3. How many steps are there in connecting two different microservices?

The synchronous call is the simplest approach for initiating contact between two services since it occurs simultaneously in both.

This further binds the two of them together since the microservice that is contacting the more remote one must wait for a response from it.

In some circumstances, using asynchronous communication may do away with the need to avoid using this sort of coupling.

Q4. What is the most important objective of developing an architecture that is centered on the provision of services?

Building software applications that use services accessible over a network, such as the web, is an application of the Service Oriented Architecture (SOA) architectural style.

The web is an example of an access network. It promotes the loose coupling of software components to make it simpler to reuse software components. This makes it possible to reuse software components.

Q5. How does the service-oriented architecture function in conjunction with cloud computing?

Service-Oriented Architecture simplifies deploying software as a service (SaaS) on a cloud platform.

At the same time, the cloud platform delivers the necessary processing power and other resources for the process.

Your company will find it much simpler to cooperate both internally and externally with IT when SOA and cloud integration are implemented.

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