FPV and the integration of electronic devices in the drone industry is a trend. This integration is typically achieved through the use of a so-called 'stack', and the benefits of doing so include:
Compatibility: Stack design typically takes into account compatibility with other modules, making it easier for users to combine different components together.
Weight and size: Through integration, the space and weight required for individual components can be reduced, which is particularly important for weight sensitive applications such as drones.
Easy to maintain and repair: Integrated stacks are typically designed to be more modular, making maintenance and upgrades more convenient and reducing the need for complex soldering and wiring.