Answers for "what is a 301 redirect"

301 redirect

#In .htaccess
  
Redirect 301 /old-page https://www.example.com/new-page

301 redirect http to https

#For apache .htaccess
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

how to create a 301 redirect with domain.com

RewriteEngine On 
RewriteCond %{HTTP_HOST} ^DOMAIN.com [NC]
RewriteCond %{SERVER_PORT} 80 
RewriteRule ^(.*)$ https://www.DOMAIN.com/$1 [R=301,L]