Cross-chain by Chainlink

// Set the tokens and amounts to transfer
Client.EVMTokenAmount[] memory tokenAmounts = new Client.EVMTokenAmount[](1);
Client.EVMTokenAmount memory tokenAmount = Client.EVMTokenAmount({
  token: _addressToken,
  amount: _amount
});
tokenAmounts[0] = tokenAmount;

// Create an EVM2AnyMessage struct in memory to send via CCIP
Client.EVM2AnyMessage memory message = Client.EVM2AnyMessage({
  receiver: abi.encode(_receiver),  // Receiver (EOA) at destination
  data:  "",                        // No data to send
  tokenAmounts: tokenAmounts,       // ERC20 tokens and amounts
  extraArgs: Client._argsToBytes(   // Optional parameters
    Client.EVMExtraArgsV1({
      gasLimit: 0,                  // gasLimit = 0 because EOA
      strict: false})               // No strict sequencing
  ),
  feeToken:  address(_addressLink)  // Setting feeToken to LINK
});

// approve the Router to spend tokens on sender contract's behalf.
IERC20(addressToken).approve(address(router), _amount);

// Send the message through the router and store the returned message ID
bytes32 messageId = router.ccipSend(
  destinationChainSelector,
  message
);
 

// Create an EVM2AnyMessage struct in memory to send via CCIP
Client.EVM2AnyMessage memory message = Client.EVM2AnyMessage({
  receiver: abi.encode(_receiver),               // Receiver contract at destination
  data: abi.encode("Hello world!"),              // Send "Hello world!"
  tokenAmounts: new Client.EVMTokenAmount[](0),  // No tokens to be sent
  extraArgs: "",                                 // Use default values
  feeToken: address(_addressLink)                // Setting feeToken to LINK
});

// Send the message through the router and store the returned message ID
bytes32 messageId = router.ccipSend(
  destinationChainSelector,
  message
);