Architecture comparison
Communications
Runs on Google Cloud; publicly migrated trillions of messages from Cassandra to ScyllaDB and uses Elixir + Rust for real-time gateway/voice. AI features (Clyde and successors) built on OpenAI.
Communications
AWS-native communications APIs (voice/SMS/email via SendGrid) over MySQL + DynamoDB with Kafka eventing. Owns the Segment CDP; CustomerAI layers LLMs over unified customer profiles.