The correct answers are B and C. Option B, 'Ability to quickly change required capacity,' is an advantage of the AWS Cloud because it allows users to scale their infrastructure up or down based on demand, providing flexibility and cost optimization. Option C, 'High economies of scale,' is also an advantage as AWS operates at a large scale, which allows it to achieve cost efficiencies and offer enterprise-grade services to customers without significant upfront investment. Option A is incorrect because AWS does not manage user-owned infrastructure; it provides cloud services that users can leverage. Option D is incorrect as the AWS Cloud typically decreases deployment time to market, not increases it. Option E is incorrect because AWS uses a pay-as-you-go model, which reduces fixed expenses in favor of variable, operational expenses.