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Twilio Segment migrated from 140+ microservices back to a monolithic architecture after microservices created unsustainable operational overhead. The team consolidated separate repos and queues into a single service with a unified test suite using Traffic Recorder. This transition dramatically improved developer productivity (46% more library improvements), reduced deployment complexity from 140+ services to one, and simplified scaling. While accepting trade-offs like reduced fault isolation and less effective in-memory caching, the monolith proved more suitable for their server-side destinations pipeline.

Goodbye Microservices

The post did not simply end with microservices being bad or monolipo being great.
I can’t imagine 120 services being combined into one.

As I read, more and more it sounds like they are heading for disaster after merging everything into 1 repo/service