The Internet Information Services tool enable in managing IIS components including: application pools; sites; SMTP e-mail; and certificates. What is the purpose/function of each? Solution Application Pools: ==================== Improved server and application performance. You can assign resource-intensive applications to their own application pools so that the performance of other applications does not decrease. Improved application availability. If an application in one application pool fails, applications in other application pools are not affected. Improved security. By isolating applications, you reduce the chance that one application will access the resources of another application. SMTP Emails: ==================== Configure SMTP e-mail in IIS when you want to deliver e-mail messages from your site. Mail can be delivered immediately or it can be delivered to a file location on disk where it can be retrieved for delivery later. For example, a company can provide an e-mail link for sending feedback messages or for requesting information. Certificates: ==================== Certificates are part of Secure Sockets Layer (SSL) encryption. Server certificates enable users to confirm the identity of a Web server before they transmit sensitive data, such as a credit card number. Server certificates also contain the server\'s public key information so that data can be encrypted and sent back to the server. Sites: =================== A site is a container for applications and virtual directories, and you can access it through one or more unique bindings. The binding includes two attributes important for communication: the binding protocol and the binding information. The binding protocol defines the protocol over which communication between the server and client occurs. The binding information defines the information that is used to access the site. For example, the binding protocol of a Web site can be either HTTP or HTTPS, and the binding information is the combination of IP address, port, and optional host header. .