Bedrock, or Bedrock Edition, is the version of Minecraft that brings together consoles, iOS/Android, and Windows 10. Bedrock originated as "Pocket Edition"/"MCPE", as it was originally only available on mobile devices.
PocketMine-MP is not a Minecraft Edition, rather it is a server software that was built prior to Mojang's release of the Bedrock Alpha Server in the early days of Pocket Edition. It remains the most popular alternative, but may not offer the most recent versions of Bedrock or the same features you may expect to see.
What about Realms vs Bedrock Alpha Server?
Realms are servers offered directly through Mojang that may offer less customization and less-than-stellar performance but a more convenient experience, especially for console players. We recommend Realms for the following players:
- Nintendo Switch players
- Parents with younger children wanting to play
- Any console players who want the most convenient experience
- Any players interested in Realms-specific perks
- Any server owners who want the most convenient experience for friends/community playing on console
If none of the above apply to you, or performance is important to you, we recommend Bedrock Alpha Server over Realms. Through several tests, we've found that the Bedrock Alpha Server offers much smoother and stable gameplay over Realms so long as it's set up with the right resources.