Systems and methods of executing a real-time electronic transaction by a real-time transaction system are disclosed. One method includes receiving, by an application programing interface (API) system, an electronic transaction request from a user. The API system may transmit the electronic transaction request to a choreographer system. The choreographer system may transmit a validation API call based on the electronic transaction request to an account system. The account system may determine whether an account associated with the electronic transaction request exists in the real-time transaction system. The choreographer system may transmit an authorization API call based on the electronic transaction request to an authorization system. The choreographer system may receive an authorization response from the authorization system. The choreographer system may transmit an electronic transaction request message to at least one of a routing engine, an account ledger system, an audit system, and/or a transaction system.