Enable GZip/DEFLATE Compression (Apache) Enable compressed responses using GZip or Deflate to reduce bandwidth and increase performance.

Redirect Default Document to Directory (Apache) Redirect all requests to default documents to their parent directory URL. Important SEO tactic to avoid duplicate content penalties.

Redirect All HTTP Requests To HTTPS (IIS) Redirect all non-HTTPS requests to use an HTTPS connection.

Redirect Domain to Another Domain (IIS) Redirect all requests to one domain to another domain. Useful if changing domain names for a site.

Canonicalize Host – Add/Remove www (Apache) Canonicalize host names by either prepending www or explicitly omitting it from the domain name.

Add Caching for Static Assets (Apache) Add caching directives that browsers will use to cache static assets on the client side.

Rewrite URL as Query String Parameters (Apache) Convert URL structure to query string parameters. Use to create SEO friendly URLs.

Canonicalize Host – Add/Remove www (IIS) Canonicalize host name to enforce either a www-prefixed domain or non-www-prefixed domain.

Block Specific User-agents (NGINX) Disallow specific User-agents' requests. Useful for dealing with malicious bots.

Add Caching for Static Assets (NGINX) Send browsers caching directives that they will use to cache static assets on the client-side.