  eSIM(embedded SIM) is an advanced alternative to traditional physical SIM
cards initially developed by the GSM Association(GSMA) in 2013 [1][2]. The eSIM
technology has been deployed in many commercial products such as mobile
devices. However, the application of the eSIM technology in IoT devices has yet
to start being primarily deployed. Understanding the eSIM architecture and the
basic ideas of the eSIM provisioning and operations is very important for
engineers to promote eSIM technology deployment in more areas, both academics
and industries.
  The report focuses on the eSIM technology in the IoT architecture and two
major operations of Remote SIM Provisioning(RSP) procedure: the Common Mutual
Authentication procedure, a process used to authenticate eSIM trusted
communication parties over the public internet, and the Profile Downloading
procedure, the way to download the Profile from the operator SM-DP+ server and
eventually remotely provision the end-user devices.
