The SPEC1282.azip benchmark uses a standard methodology to evaluate the performance of computer systems. The benchmark consists of two main components: compression and decompression. During the compression phase, a large dataset of files is compressed using the ZIP file format. The compressed data is then written to a file. During the decompression phase, the compressed file is read and decompressed back to its original form. The time taken to complete both the compression and decompression phases is measured and used to calculate the performance score.