Do big companies start with microservices?
Most did not. Basecamp, GitHub, and Shopify all started as monoliths. They split parts into services only when the team and traffic demanded it.
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More FAQs in The Monolith-First Approach: Why You Should Start Small
You ship faster, refactor easier, reason about one system, run cheaper, and you do not need to guess your service boundaries upfront. A clean monolith can be split later.
When you have multiple teams, parts of the app need to scale or deploy independently, or the monolith has become unmaintainable. Most apps never reach this point.
Yes. If you keep modules decoupled, you can extract a service later in a week, not a quarter. The cost of waiting is low; the cost of premature splitting is high.
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