Back in 2004, I started down this investment path in the Unit Trust world.
The STI ETF was in its starting stage and there were no index funds in Singapore except for 3 feeder funds by OCBC (now Lion Global) into 3 Vanguard funds (so that you can profit from S&P 500, MSCI Europe and MSCI World Index).
Unit Trusts are a basket of diversified stocks or bonds or fixed deposits that are managed with a particular investment mandate. You can create a portfolio of funds that is diversified globally, across different asset class and earn the expected return based on your selection.