[Heroku Postgres] [Grow on demand]: Pay for usage as it scales to meet your needs

### Required Terms

- [X] I agree to follow this project's [Code of Conduct](https://github.com/heroku/roadmap/blob/main/CODE_OF_CONDUCT.md)
- [X] I have read and accept the [Salesforce Program Agreement](https://www.salesforce.com/company/program-agreement/)

### What service(s) is this request for?

Heroku Postgres

### Tell us about what you're trying to solve. What challenges are you facing?

Elastic Postgres, automatically expands resources and cost in alignment with customer demand. Simplifies data growth by reacting to observed conditions, and automatically upgrading resources as the customers business demands it. Customers only pay for what they are using. No need to plan ahead for new data tiers. All the same values of Heroku Postgres but with no data restrictions and jarring upgrades to move to new tiers.