Final answer:
The suitable service for serving different language versions of a website to international viewers is a Content Delivery Network (CDN), with Amazon CloudFront being a specialized choice.
Step-by-step explanation:
The most suitable service for serving different language versions of a website to viewers from different parts of the world is a Content Delivery Network (CDN). A CDN is a system of distributed servers that deliver web content to users based on their geographic location. When a user accesses a CDN-enabled website, the CDN will serve the content from the nearest server, which can also include language-specific content. Both Amazon CloudFront and Amazon Route 53 offer CDN capabilities; however, CloudFront is specifically designed for content delivery and would likely be the more suitable choice of the two. Amazon Lightsail, on the other hand, is a cloud computing service that does not specialize in content delivery.