# 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="/pages/vcGaNuHcm0IqPOrC2MOL" %}
[VT](/confidential-cloud/technology-in-depth/intel-tdx/technology/history/vt.md)
{% endcontent-ref %}

{% content-ref url="/pages/pPbmlR7ou39vXHH8buBd" %}
[TME/MKTME](/confidential-cloud/technology-in-depth/intel-tdx/technology/history/tme-mktme.md)
{% endcontent-ref %}

{% content-ref url="/pages/mNEEZd7ykx454Sb3qgKC" %}
[SGX](/confidential-cloud/technology-in-depth/intel-tdx/technology/history/sgx.md)
{% endcontent-ref %}


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