A website redesign often means a complete rebuild and migrating content from the old site.
When it's done well, the new site replaces the old one and everyone loves the changes. When it's not, people are upset that things are missing or not working properly.
Table of latency between AWS regions.
Naming things is one of the hardest things in computer science. This is because it involves collaborating with other people and detailed semantics.
When you are building an api in tandem with developing an application, changes to the schema need to be implemented in both places. This can mean that the changes need to be coordinated across teams or in different languages. For projects in production, deploying these together can become quite sensitive.