Is there any Data Limit in Matomo? Is it possible to keep all historical data?
Please see our Matomo (Piwik) Data Limits Fact Sheet for more information about Data Limits and Historical Data records. In general, Matomo does not believe in any limits, and will only be limited with the server resources. If you have access to existing data, you can also transfer it to Matomo. In particular, you can import old historical visitors data in Matomo.