<ul>
<li>NoSQL is horizontally scalable because it supports hierarchical structures, which means that at any point in time, you could further establish a relationship with any data, such as parent: child.
</li>
<li>Does this mean similar scalability is not possible horizontally? No, An example is MongoDB can scale vertically by adding more resources to existing machines.
</li>
<li>It's always preferred to scale horizontally because its cost-efficient, processing power stability, hardware-efficient, and less downtime while migration :)
</li>
</ul>

*   NoSQL is horizontally scalable because it supports hierarchical structures, which means that at any point in time, you could further establish a relationship with any data, such as parent: child.
    
*   Does this mean similar scalability is not possible horizontally? No, An example is MongoDB can scale vertically by adding more resources to existing machines.
    
*   It's always preferred to scale horizontally because its cost-efficient, processing power stability, hardware-efficient, and less downtime while migration :)

Is NoSQL vertically not scalable?