QoQ

As YoY is used year over year, QoQ is used quarter over quarter, most commonly in the stock market, or to know alternative investment quarterly reports, released when the firms declare their financial results.

It measures the sequential growth or declines in 3 months compared to the previous three months.

This method is used to compare the financial metrics over a given period; It can be used to assess long-term trends useful in judging the strength of investment in a specific stock or investing solution. 

QoQ metrics involve two consecutive quarters in the financial year, and the performance of the specific quarter can be compared against the performance of the immediately preceding quarter. 

The organization can use such metrics to assess short-term progress towards a specific goal.

It can produce figures which can be used to modify strategies to perform better in the next financial year.

It can be used to compare the earnings made by firms between quarters. 

Those with seasonal businesses like retail or agriculture can use the term to track performance over time. 

Companies with steady growth in their business, like IT, green fuel technology or engineering-based firms, track data on a YoY basis, while some export/import units or production firms may need to get a month on month or weekly calculations.