Amazon OpenSearch Service now offers support for the Amazon Graviton2 instance family in six additional regions- Africa (Cape Town), Asia Pacific (Osaka), Europe (Zurich), Middle East (Bahrain). Israel (Tel Aviv), and AWS GovCloud (US-West). Graviton-based instances (C6g/M6g/R6g) in OpenSearch Service provide up to 30% better price-performance than comparable x86-based (C5/M5/R5) Amazon Elastic Compute Cloud instances.
Source:: Amazon AWS