What is Microservices?
An architectural pattern where an application is built as a collection of small, independent services that communicate via APIs, each owning its own data and deployable separately.
Understanding the Details
Microservices decompose a monolithic application into independent services, each responsible for a specific business capability. An e-commerce platform might have separate services for user management, product catalogue, ordering, and payment processing. Each service can be developed, deployed, and scaled independently by different teams. The benefits include independent deployment (update one service without redeploying everything), technology flexibility (each service can use the best tool for its job), and team autonomy (small teams own complete services). The costs are significant: distributed system complexity, network communication overhead, data consistency challenges, and operational overhead of managing many services. Microservices make sense when team size, deployment frequency, and scale justify the complexity.
How It Works in Practice
Independent deployment
The billing service is updated and deployed without touching the product service, reducing deployment risk and enabling faster release cycles.
Selective scaling
The search service handles 10x more traffic than user management, so it scales independently without over-provisioning the entire application.
Team ownership
A team of 5 owns the notification service end-to-end: code, database, deployment, and monitoring — enabling autonomous decision-making.
Why It Matters
The right architecture for your scale determines engineering productivity. Microservices enable large organisations to move fast, but premature adoption slows small teams down.
What People Often Get Wrong
Microservices are always better than monoliths. Actually, most companies are better served by a monolith or modular monolith until they reach significant scale.
Microservices are just small services. Actually, microservices involve patterns for service communication, data ownership, and distributed operations.
Microservices reduce complexity. Actually, they trade monolith complexity for distributed system complexity, which can be harder to manage.
How We Handle Microservices
We recommend microservices only when scale and team size justify the complexity, more often building modular monoliths that provide similar benefits with less operational overhead.
Related Terms
Common Questions
Need Help With Microservices?
If you'd like to discuss how microservices applies to your business, we're happy to explain further.