42 Computer software development in the field of open source software; computer software development in the field of open source software for use under Trusted Execution Environments; Design and development of computer software; design and development of computer software for use under Trusted Execution Environments; Design, development, installation and maintenance of computer software; design, development, installation and maintenance of computer software for use under Trusted Execution Environments; Developing customized software for others; developing customized software for use under Trusted Execution Environments for others; Developing customized software in the field of open source software for others; developing customized software in the field of open source software for use under Trusted Execution Environments for others; Design, implementation and updating of software for data isolation and encryption processing; design, implementation and updating of software for data isolation and encryption processing under Trusted Execution Environments; Design, implementation and updating of software for use in confidential computing; design, implementation and updating of software for use in confidential computing under Trusted Execution Environments; Design, implementation and updating of software for creating secure memory regions, namely, enclaves; design, implementation and updating of software for creating secure memory regions, namely, enclaves, for use under Trusted Execution Environments; Design, implementation and updating of software to maintain and operate computer systems; design, implementation and updating of software for use under Trusted Execution Environments to maintain and operate computer systems; providing online, non-downloadable computer software for data isolation and encrypted computing; providing online, non-downloadable computer software for use in confidential computing; providing online, non-downloadable computer software for creating secure memory regions, namely, enclaves; providing online, non-downloadable computer software to maintain and operate computer systems