1. The document discusses different hosting architectures for Magento 2 websites, from a single server setup to more advanced scalable architectures on AWS. 2. A single server setup provides simple installation but has limitations around resource contention and lack of elasticity. Moving to a traditional multi-server setup provides more isolation and redundancy but lacks flexibility. 3. The most flexible solution discussed is deploying to AWS using a microservices architecture, which allows dedicated resource provisioning and high scalability, but requires more complex infrastructure monitoring and operational investment.