M3U playlists are static text files. If a server moves or changes an IP address, your M3U link breaks. Xtream Codes use dynamic authentication. The server can reroute you without forcing you to manually update the URL in your app.
Technically, these are not "codes" in the sense of a voucher or promo key. They are login credentials that connect a client application (like TiviMate, IPTV Smarters, or XCIPTV) to a server. xtream iptv codes
Pro Tip: Do not confuse an Xtream Code login with an M3U URL login. If you try to paste a username into a URL field, it will fail. M3U playlists are static text files
Prices typically range from $10–20/month or $60–100/year. The Protocol: These codes utilize the Xtream Codes