Section 10B of the Income-tax Act, 1961 provides a tax exemption for profits derived by 100% Export-Oriented Units (EOUs) from the export of goods or services. This section applies to undertakings that manufacture or produce articles, things, or computer software and are approved as 100% EOUs by the competent authority. The exemption is available for a period of 10 consecutive assessment years beginning with the assessment year relevant to the previous year in which the undertaking begins to manufacture or produce such goods or services. The significance of this section lies in its role in promoting exports and encouraging the establishment of export-oriented industries in India. The statutory test involves the undertaking being a 100% EOU and the profits being derived from the export of goods or services. The burden of proof is on the taxpayer to demonstrate compliance with the conditions laid out in the section. In practice, this section is crucial for businesses looking to leverage tax benefits while contributing to the country's export growth.