Wise's 8.4 Million Internal Linking Architecture

// Example of how Wise might generate internal links programmatically

function generateCurrencyLinks(sourceCurrency, targetCurrency, locale) {
  // The core data for link generation
  const topCurrencies = ['USD', 'EUR', 'GBP', 'JPY', 'AUD', 'CAD', 'INR', 'CHF'];
  const amounts = [1, 5, 10, 20, 50, 100, 250, 500, 1000, 2000, 5000, 10000];
  const locales = ['us', 'gb', 'eu', 'jp', 'in', 'au', 'ca', ...]; // 40+ locales
  
  // Collection to store generated links
  const links = [];
  
  // 1. Direct currency pair link
  links.push(`/${locale}/currency-converter/${sourceCurrency.toLowerCase()}-to-${targetCurrency.toLowerCase()}-rate`);
  
  // 2. Reverse pair link
  links.push(`/${locale}/currency-converter/${targetCurrency.toLowerCase()}-to-${sourceCurrency.toLowerCase()}-rate`);
  
  // 3. Links to source currency paired with other top currencies
  topCurrencies.forEach(currency => {
    if (currency !== sourceCurrency && currency !== targetCurrency) {
      links.push(`/${locale}/currency-converter/${sourceCurrency.toLowerCase()}-to-${currency.toLowerCase()}-rate`);
    }
  });
  
  // 4. Links to target currency paired with other top currencies
  topCurrencies.forEach(currency => {
    if (currency !== sourceCurrency && currency !== targetCurrency) {
      links.push(`/${locale}/currency-converter/${targetCurrency.toLowerCase()}-to-${currency.toLowerCase()}-rate`);
    }
  });
  
  // 5. Amount variation links
  amounts.forEach(amount => {
    links.push(`/${locale}/currency-converter/${sourceCurrency.toLowerCase()}-to-${targetCurrency.toLowerCase()}-rate?amount=${amount}`);
  });
  
  // 6. Links to same pair in other locales
  locales.forEach(otherLocale => {
    if (otherLocale !== locale) {
      links.push(`/${otherLocale}/currency-converter/${sourceCurrency.toLowerCase()}-to-${targetCurrency.toLowerCase()}-rate`);
    }
  });
  
  return links;
}

// This function would generate dozens of links for a single currency pair
// When applied across 170+ currencies, 40+ locales, and multiple amount variations,
// it creates millions of interconnected pages