Firm- it is the database or server where all the data (which is used for pricing and valuation) related to listed options, payments and futures is stored.
DTD- it means derivative trade database. it is the database or server where all the data related to OTC trades are stored.
MDS- Market data server. In this server, all the market data is stored.
IPSVM- Instrument Pricing Server Valuation Model, it is the server which is contacted for pricing and valuation of tradebook.
GMAG- Global Modelling and Analysis Group, it is the group responsible for designing of the valuation models of all kinds of securities, it consists of around 20 one of the most genius guys on earth. The group is headed by a person, who is PHD in theoritical physics.
LOTS- Listed options trading system
RDB- Result database
RMM- Risk Management measures
VAR- Value at risk
PC-price control
FOBO Reconciliation- front office back office reconcilliation