# History

Intel TDX is not a new technology but rather a combination of existing Intel technologies, including Virtualization Technology (VT), Total Memory Encryption (TME)/Multi-key Total Memory Encryption (MKTME), and Software Guard Extensions (SGX). 

In the following section, we summarize the technologies.

{% content-ref url="history/vt" %}
[vt](https://docs.enclaive.cloud/confidential-cloud/technology-in-depth/intel-tdx/technology/history/vt)
{% endcontent-ref %}

{% content-ref url="history/tme-mktme" %}
[tme-mktme](https://docs.enclaive.cloud/confidential-cloud/technology-in-depth/intel-tdx/technology/history/tme-mktme)
{% endcontent-ref %}

{% content-ref url="history/sgx" %}
[sgx](https://docs.enclaive.cloud/confidential-cloud/technology-in-depth/intel-tdx/technology/history/sgx)
{% endcontent-ref %}