B) always be available. That's a relative term, though. While complete outages are rare, there are frequent, prolonged periods of abysmal performance (latency

B) always be available. That's a relative term, though. While complete outages are rare, there are frequent, prolonged periods of abysmal performance (latency in the >300ms range, throughput approaching <50 MBit/s) and the average performance without CloudFront isn't stellar either. However, for many use-cases the sheer convenience and low cost of entry trump these issues.