How can we design the backend architecture to handle increasing traffic ?

#help

Hello everyone,

As IronBox (https://ironbox.kz/) continues to expand its services and customer base, we are looking to redesign our backend architecture to handle increasing traffic and data. We want to ensure our system remains robust, efficient, and scalable.

We would love to hear your thoughts and suggestions on the following:

What are the best practices for designing a scalable backend architecture?
How can we ensure our system can handle sudden spikes in traffic?
What technologies or frameworks would you recommend for scalability and reliability?
How can we efficiently manage and process large amounts of data?
What are the key considerations for maintaining high performance as we scale?
Your insights and experiences will be highly valuable to us. Thank you in advance for your contributions!