[your_username]

I'm actually in the process of moving a large monolith from EC2 to Heroku and this is exactly what the plan is: our DB (> 10TB) is on RDS; ES, Redis also are from AWS. Third-party services aren't provisioned through the marketplace, instead straight through the vendor. Right now this is Datadog and a bug reporter.

We're extremely overprovisioned on EC2 as it is (peaking at 54GB consumed RAM over the last 12 months, and we have 386GB available) so management is welcoming the change to a bunch of Performance L dynos!

We're moving to Heroku for a variety of reasons — least of which is their recent fiasco — primarily dev exp and Pipelines/review apps (still supported!). Both will give our developers a vastly superior experience to what they had: nothing (we desperately need it).

[flatiron]

Nobody ever got fired for hiring IBM but I think people may get fired now a days for moving to heroku! Good luck! I would love to hear an update in 12 months if you are still there / heroku is still running.