What are binary and project compatibility?

Answer Posted / ritesh ratna

For a Component is developed under Project Compatibilty,
it's GUID never changes on it's signature change and/or
recompilation hence, the older version of the component,
that have already been distributed will still be working
without any problem. However in case of Binary
Compatibilty, whenever the component is recompiled,
irrespective of whether it's signature has changed or not,
its GUID would defiinately change (a New GUID is assigned),
hence it becomes extremely essential that all the older
versions of the component should be changed, as they would
no longer work and would throw an error on execution.

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