Asterisk Real-Time Configuration

I need you to configure asterisk real-time to work with multiple tenants (e.g with tenant based contexts or dial plan aliases). Infrastructure exists in AWS for Database and auto scaling group of asterisk servers but the whole thing needs configuration. This is entirely from scratch. What we have ------------------------------------------- We have a fleet of raw, unconfigured asterisk servers in an auto-scaling group (ASG) in AWS. We also have a database instance in Amazon RDS - again, just the instance - no schema or configuration yet. We have all of the necessary networking infrastructure all configured in AWS with security groups, VPC etc... How it will work ------------------------------------------- Customers will have their own virtual PBX within this set up. We want one asterisk instance that can share load across multiple servers, and share central configuration so that the SIP endpoints register with a server, and stay registered there - but they could register with any server. If one of the servers in the ASG goes down, the registration will get renewed by the endpoint against another server in the group. The idea is quite simple - each customer can have 1 or more incoming numbers, and 1 or more extensions. We can set up ring groups and voicemail for each of them, but they behave as separate dial plans - as if they are separate PBXes. So we might have: Customer 1: Extensions: - 201 + vm - 202 + vm - 203 + vm Inbound DID: - 01234 567890 - 01234 567880 Customer 2: Extensions: - 201 - 202 + vm - 203 + vm Inbound DID: - 01456 789123 We want to be able to specify different hold music per customer and also to specify time groups and time conditions per customer. The customer will NEVER have access to the UI in any way, or even know it is asterisk. We only need to be able to do the configuration in files or the DB. I don't mind if it is ARA or just regular asterisk, and reload on demand as long as we can add new customers and modify them without dropping live calls. What we need ------------------------------------------- We need you to configure this entire set up in Asterisk & Database. All the server infrastructure is in place but it is NOT configured. We DON'T Need you to configure individual customers. We just need 2x examples configured to prove that it works.