Account Aggregator (AA) framework is a data-sharing system that is required for making investments or accessing credit, among other financial services.
In a conversation with Business Today, Adhil Shetty, CEO of Bankbazaar.com talks about why the AA framework can be the next UPI in India.

Adhil Shetty: The data is managed by the account aggregator from sources such as banks, mutual funds, or insurance companies.

With your consent, the AA will fetch your data such as bank statements, and share it with the lender.

BT: How to use the service of account aggregators?
Registration can be instantly done with OTP-based validation.
Source: BusinessToday
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