Динамическая конфигурация:
Пример кода (Python):

# Read configuration from a file
with open('config.json') as f:
   config = json.load(f)
# Access configuration values dynamically
api_key = config['api_key']
api_url = config['api_url']

Внедрение зависимостей:
Пример кода (Java):

// Define an interface
public interface Logger {
   void log(String message);
}
// Implement the interface
public class ConsoleLogger implements Logger {
   public void log(String message) {
       System.out.println(message);
   }
}
// Use dependency injection to provide the Logger implementation
public class ExampleService {
   private final Logger logger;
   public ExampleService(Logger logger) {
       this.logger = logger;
   }
   public void doSomething() {
       logger.log("Doing something...");
   }
}

Флаги функций:
Пример кода (JavaScript):

// Check if a feature is enabled
if (featureFlags.isEnabled('new_feature')) {
   // New feature code goes here...
} else {
   // Legacy code goes here...
}

A/B-тестирование:
Пример кода (Python):

import random
# Randomly assign users to different variations
if random.random() < 0.5:
   # Variation A code goes here...
else:
   # Variation B code goes here...

Непрерывная интеграция и развертывание (CI/CD):
Пример кода (YAML – GitLab CI/CD):

stages:
 - build
 - test
 - deploy
build_job:
 stage: build
 script:
   - echo "Building the project..."
test_job:
 stage: test
 script:
   - echo "Running tests..."
deploy_job:
 stage: deploy
 script:
   - echo "Deploying the application..."