Sometimes your confidential information is inside your employees' and contractors' heads, so you may not want the person you're sharing your confidential information with to be allowed to hire them.
Your contract can include a promise that the person you share confidential information with will not hire your employees and contractors. This kind of promise is called a "non-solicitation clause".
If you include this optional protection it means the other person cannot directly offer your employees and contractors a job without your permission.
If you're a startup and relying heavily on your early stage employees and contractors, a non-solicitation clause is also a good idea to make it easier to hang on to these people during your startup phase.
Your Confidentiality Agreement already says that the information you share can't be used for anything other than the purpose for which you shared it. But, you can take things one step further and say that the other person is not allowed to ask your customers for their business. This is known as a "non-solicitation" clause.
If you include this optional protection it means the other person cannot directly ask for business from your customers.
A customer non-solicitation promise is a common thing to include in a Confidentiality Agreement if you're sharing information with a potential competitor.