By HestiaCP Website served by which Web Server?

by Default hestia use Apache web server?

if yes, how I can change webserver Apache to Nginx? Please provide step by step process. without lossing websites or data because important website are hosted on server.
I researched on web, Nginx is 1.5/2 times faster then apache and able to handle more requests.
[comparison reference video: Best Web Server? Apache vs Nginx vs OpenLiteSpeed (static content speed test) - YouTube || Nginx vs Apache: Performance Benchmark - YouTube]

Pleese use the search function. It has been handled 1000 times

Also we use Nginx by default for all static content…