The best way to ensure scalability and maintainability in any software system is to ensure incentives are aligned. For example if a team is only incentivised on building features or getting out fixes they will tend to do this instead of focussing on scalability. Somethings you can do to provide the right incentives: - Make the team responsible for building the system responsible for its uptime, one time I gave a team who had built the responsibility of keeping it running it for a weekend. Needless to say it acted up and they barely slept, fixes were prioritised immediately on the Monday. - Measure uptime, time to recovery (TTR) etc to encourage good system design

If there's a production issue costing the business thousands per minute, do the fastest fix possible and get it out! Once that's resolved, take a step back to assess root causes and prevent similar issues. "Quick fixes" are often a business necessity, but as engineers, it's our job to define what "as quickly as possible" really means. Engineering shortcuts touted as quick fixes often don't deliver the value they appear to, as they increase technical debt. Tech debt slows development, leads to fragile systems, and costs more to fix later. In my view, "as quickly as possible" should still include code quality, tests, and refactoring. This ensures the fix is scalable, maintainable, and won't lead to bigger problems down the line.

é essencial criar diretrizes claras desde o início. Priorizando uma arquitetura modular, onde componentes possam ser alterados sem impactar o sistema inteiro. Exemplos que podem ser adaptados conforme sua realidade: Arquitetura modular: Microservi?os. Por exemplo, se há um módulo de pagamentos, ele deve ser separado para poder escalar sem impactar o restante do sistema. Padr?es de design: Utilize o design pattern "Circuit Breaker" para lidar com falhas em chamadas, evitando sobrecarga. Testes automatizados: Testes unitários para validar pequenas partes do código. Por exemplo, use ferramentas como Jest ou JUnit. Documenta??o adequada: Utilize ferramentas como Swagger ou OpenAPI para documentar APIs de maneira dinamica e atualizável.