Recommendations to others considering Salesforce Heroku:
Do not use it. They do not value customer experience over enforcing contracts and making money in the short term.
If you must, be EXTREMELY careful of their contracts and roll-over dates. Even if you're in active discussions to cancel/amend with their support, their roll-over dates are still iron-clad.
Bear in mind that they will NEVER let you exit a contract, even if a once in a lifetime global pandemic pauses your business for a year and you're making 0 revenue... Review collected by and hosted on G2.com.
What problems is Salesforce Heroku solving and how is that benefiting you?
PaaS is relatively useful, avoids dev ops hires - though AWS has low-management options now-a-days. Review collected by and hosted on G2.com.