Due diligence is an investigation of a business or person prior to signing a contract, or an act with a certain standard of care.
It can be a legal obligation, but the term will more commonly apply to voluntary investigations. A common example of due diligence in various industries is the process through which a potential acquirer evaluates a target company or its assets for an acquisition
In IT Due Diligence can refer to the discovery of a company’s technology capabilities and environment or the capability of a company to provide a service or product.