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WSO2 Carbon version 4.0.2 is the successor of version 4.0.1 and has several defect fixes included. For information, refer to the following link: WSO2 Carbon Server 4.0.1 - Fixed Issues.
Enhancements:
WSO2 has refactored the Carbon context in version 4.0.2 of the base platform. Due to these architectural enhancements, its performance and efficiency has improved.
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