Hey! I'd naturally recommend SignalWire (as one of the founders over there.)
We have a full messaging + voice + video APIs, including a Twilio-compatible API just for people who need to switch. We're backed by companies like Deutsche Telekom, T-Mobile, and Samsung so we know how to make telecom infra!
We're also the folks behind the open-source FreeSWITCH framework that powers companies like Bandwidth, Five9, Dialpad, Zoom Voice... maybe even your own company's PBX!
Realtime applications. Anything having to do with video & audio mixing or interaction (WebRTC, VoIP, AR/XR, NLU, Gaming, etc...) Having those as close to the end consumers as possible can dramatically improve the experience and make them far more engaging/enjoyable.
In fact, it's critical enough in many applications that clients may want to access the services in the same cloud they use /as well as/ in the same region (or potentially in their own data center.) So that means designing the systems to deploy on any cloud provider.
While this does limit the number of niceties you can use from a single provider, it allows for some pretty amazing flexibility.
We have a full messaging + voice + video APIs, including a Twilio-compatible API just for people who need to switch. We're backed by companies like Deutsche Telekom, T-Mobile, and Samsung so we know how to make telecom infra!
https://signalwire.com/products/cloud-messaging
We're also the folks behind the open-source FreeSWITCH framework that powers companies like Bandwidth, Five9, Dialpad, Zoom Voice... maybe even your own company's PBX!
https://freeswitch.com