The idiom ‘a piece of cake' means ‘something that is easily done’. This video explains the meaning of the idiom 'a piece of cake' in English. We explain how to use it with some easy examples for Social and Business English.
The term ‘cake walk’ has an identical meaning to ‘a piece of cake’, which is that something was effortlessly prepared or done. This idiom is used when talking about something very simple that someone is doing or is about to do. It is very popular in both social and professional situations. You might also consider saying that something was ‘as easy as pie’, but this has more American connotations.
Further Examples:
I trained for months for the big race and beat everyone. So much practice made it a piece of cake.
I knew our company would win the annual prize as we’ve got such a great team. Piece of cake!