The phrase "a formidable system of" is correct and usable in written English.
It can be used to describe a powerful or impressive structure, organization, or method in various contexts, such as technology, governance, or strategy.
Example: "The company has developed a formidable system of data protection that ensures the security of its clients' information."
Alternatives: "an impressive framework of" or "a powerful network of".
To outsider investors, the "labyrinth" created by the hedge funds, managers and HSBC subsidiaries named as defendants looked like "a formidable system of checks and balances," said Oren J. Warshavsky, a partner at Baker & Hostetler, the trustee's law firm.
The fortress was surrounded on three sides by deep ravines and defended by a formidable system of walls and ditches.
Coca-Cola has a formidable system of distribution to thousands of tiendas all over the country, actively encouraging owners to stock their drinks by providing free incentives, such as point-of-sale materials and refrigerators, in return for an exclusivity agreement.
Polytene chromosome spreads have provided a formidable system for visualization of MSL binding on the male X chromosome (Fig. 2).
The anticrime drives invigorate and define the darkest corner of China's formidable system of social control, a corner, largely unseen by the broader population, where police brutality is tolerated, even encouraged.
A year later, the Allies had achieved air supremacy and were laying waste to Germany's cities (as they would to Japan's), although even then they faced formidable systems of ground fire as well as elite Luftwaffe pilots in the world's first jet fighters.
The horseshoe crab has been dubbed a "living fossil" with several hundred million years of evolutionary success, indicating that it harbors a formidable antimicrobial system.
That formidable French system of fortifications was built in the '30s by André Maginot, the French minister of war, to guard against invasion from the east.
A formidable array of advanced laser systems are emerging that produce extreme states of light and matter.
Performance optimization for these contemporary big data processing frameworks on modern High-Performance Computisg (HPC) systems is a formidable task because of the numerous configuration possibilities in each of them.
Everything was held precariously together by the person of the monarch, a formidable legal apparatus and a complex system of conciliar administration.
