Welcome to week 2 of Hosting Simple Web Applications Using Amazon Lightsail! The content for this week covers technical concepts and step-by-step instructions that are designed to help you scale and optimize an application in the AWS Cloud. This week, you will explore how to reduce latency delays with a content delivery network (CDN). You will also spread the incoming traffic between multiple application instances by setting up a load balancer. Then, you will create a Domain Name System (DNS) zone and generate the SSL/TLS certificate for a load balancer. By the end of the week, you will prepare a highly available application that receives traffic over HTTPS, a secure protocol.