Active Roles Server Web Interface - How to Implement High Availability?ARS

Hello!

So, pardon me if this has been asked in a previous post, but how does one go about ensuring high availability for a web interface? I currently have one web interface and one web database, and my business is soon expecting a huge number of users to access the website within a short time span. I was just curious what the best way is to minimize the load on the web interface.  I wasn't sure if it was to create a replicated database, or if it is to create a duplicate website....

Thank you for any help you can provide!