A Central Bank is a private institution of a country responsible for interbank trading, monetary transactions, financial stability and economic development.

A Central Bank is setting inflation targets, attempting to control the lending and borrowing between financial institutions in order to influence deflation/inflation.

A Central Bank is a public institution of a country responsible for interbank trading, monetary transactions, financial stability and economic development.

A Central Bank is a government ministry responsible to handle inflation. 

A Central Bank is setting allowed inflation, and controls financial institutions holding that monetary deflation/inflation.

London, UK.

Frankfurt (M), Germany

Strasbourg, France

Den Haag, Netherlands.

A Global Custodian is handling transactions for clients around the world. A simple Custodian will be regionally limited.

A Custodian is a specialized bank which takes over the clearing and settlement as a service.

A Custodian is a bank for a bank.

A Custodian is trading with the deposits and securities of it's clients. 

A Custodian is a specialized branch of the Central Bank responsible for Clearing and Settlement.

A Custodian is not allowed to risk the deposits and securities of it's clients. 

A Custodian can keep the dividends of the shares, held for it's clients as a fee.

A Custodian is a specialized bank which takes over the processing of transactions as a service.

Physical delivery.

Financial (netting).

Post Trade describes all banking operations triggered before the execution of a trade, but after an Bid/Ask order was placed.

Post Trade describes all banking operations triggered after the execution of a trade. 

Post Trade describes all banking operations triggered before the execution of a trade. 

Post Trade operations include processes to legally transfer owership of assets, of funds, and documentations.

Physical delivery of the commodity to you.

Financial netting of obligations.

The Backoffice is organizing the legal transfer of funds (money) in return with the legal transfer of ownership.

The Backoffice is sending trade confirmations of executions from the Front Office.

The Backoffice takes over the function of a Central Counterparty (CCP).

The Backoffice is maintaining connections with Custodians, and Regulators. 

The Backoffice is receiving trade confirmations of executions from the Front Office.

The Backoffice sends order instructions back to Investors, to signal trading opportunities.

The Backoffice is dealing with all pre-trade operations.