A space-conserving integrated fluid delivery system which is particularly useful for gas distribution in semiconductor processing equipment. The invention pertains to a diffusion bonded integrated fluid flow network architecture, which includes, in addition to a layered substrate containing fluid flow channels, an in-line filter and may include various fluid handling and monitoring components. The integrated fluid delivery system that is formed from a layered substrate is diffusion bonded, and the various fluid handling and monitoring components may be partially integrated or fully integrated into the substrate, depending on design and material requirements.