Update a stack

- [Instructor] In this demonstration,…we'll look at what we can do to update…the equipment behind our different stacks.…We left off after we've deployed the sample web server stack…which was just a LAMP instance, a single instance in fact.…Here we have it on our display,…where we can see the sample web server,…and if I click this instance, I can actually make out…what the description was, which came right…from the template.…I can tell what the status is,…and I can look through different outputs.…In this case, one of the outputs…happens to be the website URL itself,…which tells us that I can click on this…in order to go view the web page.…

I can also look at the status of different…web server instances, as well as the security group…which defines the firewall rules.…And down below, we happen to have our events.…Let's say that I want to go through the process…of updating some of these things.…Well, right now, the system is laid out…with a single availability zone.…Maybe I want to go in and actually change that.…So one thing I can do is choose to update the stack.…