List unspent transaction outputs by address on Bitcoin with Amazon Managed Blockchain Query | Amazon Web Services
Briefly

Operating your own Bitcoin Core node prioritizes independence and verifiability, but limits data retrieval scale. AMB Query in contrast offers scale indexing, low-latency API, and cloud storage for unlimited wallets.
Amazon Managed Blockchain (AMB) provides AMB Query for cost-effective and reliable access to Bitcoin data at scale. AMB Access offers serverless access to a fleet of Bitcoin nodes for broadcasting transactions.
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