Exalted Orb is an important currency in the path of exile. His role is to add a piece of rare equipment with a new random affix, and it is also one of the common currency used by players in the game.

What items can poe players use Exalted Orbs?
Exalted Orbs are most effectively used when meta-crafting. Professional players prepare specific rare items, with certain suffixes and prefixes. They are of the highest their, and the number of those properties have to match their needs. After having prepared the item, they use meta-crafting mods from level 8 Masters, allowing them to guarantee getting the property they need when using Exalted Orb.
On the other hand, if you really have to, you could possibly gamble with some expensive items that have open slots for additional properties.
Take a look at the Body Armour below:
It has very high Energy Shield rolls (over 900 ES overall) and still 2 open slots for additional properties. If you are rich enough to be able to afford similar items it might be reasonable to craft some additional properties with Exalted Orbs. Keep in mind you will be losing the Orb in the process, and also if low tier affixes/suffixes show up on your item, it will actually lose some of the value.
How to get Exalted Orbs?
Exalted Orbs are rare currency items that can be dropped by slain monsters, chests, and destructible containers. They also drop from Arcanist’s Strongboxes and doing beastcrafting recipe, etc.
Of course, we can also buy Exalted Orbs online. Personally, if you need a lot of Poe currency in a short period of time, there is no doubt that Eznpc is the best choice for you. I have have already bought PoE Currency 3 times on Eznpc, and I have to admit that every purchase is a great experience for me. And the price on this website is definitely the cheapest on the market, and you can visit Eznpc official website to compare it with some other online stores and choose the one that fits you the best.
Recommend:
Path of Exile: POE Exalted Orb Farming Guide
Path Of Exile Currency Guide: Some Information You Must Know About Poe Exalted Orbs