How can you choose alternatives to microservices?

2 Modular architecture

A modular architecture is a middle ground between a monolithic and a microservice architecture. It consists of a single application that is divided into multiple modules that are loosely coupled and highly cohesive. Each module has a well-defined interface and responsibility, and can be developed, tested, and deployed independently. A modular architecture can offer some of the advantages of microservices, such as modularity, scalability, and flexibility, without the challenges of distributed systems, such as network latency, data consistency, and service discovery. However, a modular architecture can also have some drawbacks, such as increased complexity, dependency management, and integration testing.

3 Serverless architecture

A serverless architecture is a software design approach that leverages cloud services to run and manage the application logic. Instead of building and deploying microservices, the application consists of functions that are triggered by events and executed on demand by a cloud provider. A serverless architecture can offer some of the benefits of microservices, such as scalability, performance, and resilience, without the operational overhead, infrastructure management, and service orchestration. However, a serverless architecture can also have some limitations, such as vendor lock-in, cold starts, statelessness, and debugging difficulty.

4 Hybrid architecture

A hybrid architecture is a software design approach that combines different architectural styles to suit the needs and characteristics of the application. For example, you might use a monolithic core for the stable and critical parts of the application, and microservices or serverless functions for the dynamic and experimental parts. A hybrid architecture can offer the best of both worlds, as you can leverage the strengths and mitigate the weaknesses of each architectural style. However, a hybrid architecture can also introduce some challenges, such as complexity, inconsistency, and communication overhead.

Choosing the best alternative to microservices depends on several factors, such as the size, scope, and nature of the application, the requirements and expectations of the users and stakeholders, the skills and preferences of the development team, and the trade-offs and risks involved. There is no one-size-fits-all solution, and you should evaluate the pros and cons of each alternative in relation to your specific context and goals.

5 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?