What is real-time collaboration?
Real-time collaboration means several people editing the same document, spreadsheet or presentation at the same time, each seeing the others’ changes and cursors appear within moments.
How real-time editing works
Each change is sent as a small operation, such as “insert a word at position 120”, rather than as a whole new file. A server or the clients themselves merge everyone’s operations so that every copy ends up identical, even when two people type in the same paragraph at once.
Operational transformation and CRDT
Two families of techniques make this work. Operational transformation adjusts each incoming operation for the ones that happened at the same time, and has powered collaborative editors for decades. A CRDT, short for conflict-free replicated data type, designs the data so that changes can be merged in any order and still agree.
Real-time collaboration benefits
- No more emailing versions back and forth.
- Comments and changes happen where the work is.
- Everyone always sees the latest version.
- A meeting can edit the document instead of talking about it.
Real-time collaboration vs version control
Version control, as used for code, lets people work separately and merge later, with an explicit review. Real-time collaboration merges continuously, which suits documents, sheets and slides where a shared live copy matters more than reviewed branches. In Arkenso Docs everyone edits the same document, sheet or slide at once and sees each other’s cursors and changes appear; nothing needs saving.
Last reviewed 2026-11-01.