How encryption works in Mobile apps when we select "AES encryption"?

Could you explain how exactly the encryption works in Mobile side when we chose “AES encryption” from Downloads section in Developer project management dashboard.

@tushar.jain @naks

AES Encryption is our default encryption which is used for each request and response.
AES-GCM is the upgraded version of this Encryption. It was required by clients and highlighted in VAPT.

AES-CBC only performs a XOR between the block encrypts, and XOR’s are so fast that the overhead should be negligible.
AES-GCM however consists of counter (CTR) mode & GMAC calculations.

Use the below link for reference:
encryption - AES256 CBC vs AES256 GCM performance? - Stack Overflow.

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Welcome Tushar!. Thanks for the answer.