A modular software design approach where independent software services, APIs, and microservices can be connected and reconfigured like building blocks.

A top-tier buzzword used in cloud architecture presentations to make connecting microservices sound like playing with high-tech Lego bricks. It promises infinite modular agility, glossing over the developer maintenance required to manage dozens of separate API connections.

• Lego Brick Metaphors: Comparing complex software microservices and API schemas to simple plastic snapping toys.
• Maintenance Overhead: Managing thirty separate "composable" software tools that each require independent updates and monitoring.
• Over-Engineering: Building a modular composable stack for a simple company that just needs one straightforward software tool.

The Lego Movie (2014) scene where Lord Business glues Bricksburg structures together with Krazy Glue, while Master Builders frantically snap mismatched plastic bricks together to construct a flying submarine that immediately falls apart.

Modular software designed with independent building blocks that can be connected or swapped out easily.

“Our composable architecture gives enterprise teams the flexibility to build custom operational workflows.”

“We chose software built with modular components so our IT team can easily add new features as needed.”