Big Data Analytics helps in developing insights which are relevant and required across customer cycle –acquisition, development and retention. Using Big Data analytics, the social media data can be analyzed to help marketing manager focus on right social media channel for customer acquisition. Customer interaction and transaction data offer significant opportunities for the banks to understand customer needs. The channel interaction and transaction can be analyzed effectively using Big Data platform and tools. Also, analysis of customer complaint logs and emails to identify and understand common customer concerns for building strategy to address customer concerns proactively.