In the blockchain world, Ethereum can be compared to a bustling metropolis, while various Rollup solutions are like skyscrapers in the city. In this analogy, Caldera plays a unique and critical role — it is like an intelligent interchange system that connects different parts of this city.

Caldera is not just a simple connection between different blockchain projects; it is more like an intelligent transportation hub that allows various 'buildings' in the city to communicate and collaborate efficiently. This interconnectivity greatly enhances the efficiency and functionality of the entire ecosystem.

In this innovative system, Metalayer acts as the core control hub. The ERA token can be seen as the currency of this intelligent transportation system, which is not only used for paying fees but also serves as an important component in maintaining the normal operation of the entire network.

Currently, the market price of ERA is less than $1. This is mainly because the Caldera ecosystem is still in its infancy. However, as more and more projects choose to deploy on Caldera and the interactions between different blockchains become increasingly frequent, the demand for ERA is bound to increase.

Given the expected expansion of the ecosystem and the gradual improvement of its functions, it is not surprising that the price of the ERA token reaches around $2.8 by the end of the year. This will be a natural result of the continuous development of the entire ecosystem.

The emergence and development of Caldera marks a progression towards higher levels of interoperability and efficiency in blockchain technology. It not only connects different blockchain projects but also paves the way for the future development of the entire Ethereum ecosystem. As time goes on, we have reason to expect that Caldera will play an increasingly important role in promoting the large-scale application of blockchain technology.