# Concepts

 Learn how to manage Nx Cloud subscriptions and other options.

{% cards %}
{% card title="The Building Blocks of Fast CI" description="" url="/ci/concepts/building-blocks-fast-ci" /%}
{% card title="Reduce Wasted Time in CI" description="" url="/ci/concepts/reduce-waste" /%}
{% card title="Parallelization and Distribution" description="" url="/ci/concepts/parallelization-distribution" /%}
{% card title="Cache Security" description="" url="/ci/concepts/cache-security" /%}
{% /cards %}



Learn how to manage Nx Cloud subscriptions and other options.