Paytm on Wednesday announced it will be launching its Payments Bank operations from May 23 and appointed Renu Satti as the latter's CEO. Satti replaces Shinjini Kumar, a former central banker and senior executive at consultancy PwC, who was named as Paytm Payments Bank CEO last year. Satti has worked with Paytm's parent company One97 Communications for around 10 years.