What is the full meaning of IP address and the usefulness

Some are maybe or woundring saying what is the meaning of IP address and what is it for, because some one have ask me that kind of question just last week.

So today i decide to explain the full meaning of IP and and usefulness or duty (s) of IP.

IP address simply means An Internet Protocol address (IP address) is a unique number assigned to all devices (such as a computer, tablet, or phone) when they connect to the internet.

IPv4 vs. IPv6 addresses
Two versions of Internet Protocol are now in use, IP Version 4 (IPv4) and IP Version 6 (IPv6). They have two primary functions: identification and location addressing.

The main difference between IPv4 and IPv6 is the number of possible addresses. IPv4 only allows for about 4 billion, because it uses just 32 bits. IPv6 was introduced in 1995 to ensure that the world would not run out anytime soon: IPv6 uses 128 bits, resulting in 3.4 x 1038 possible addresses.

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Source: ejitex