AWS Batch

We have some use cases for which we do bulk activities on a selected customer base. We query customer base from RDS instance based on specific criteria and need to trigger a particular operation for each customer (e.g. send an email, execute a web function). All bulk activities need to be scheduled at a particular frequency. We are exploring the right stack for the same. Is AWS Batch fit for such a scenario? Where should the customer base be stored? What all applications can be useful? Please suggest.