As global CO₂ emissions continue to rise, IT stands out as one of the fastest‑growing contributors, driven by expanding digital estates, accelerating AI investments, and rapidly growing data center demand. This reality is reshaping expectations for enterprise architecture (EA).

Architects are no longer asked only to optimize cost, performance, and resilience. They are increasingly expected to design IT estates that are measurably sustainable and capable of producing credible ESG data.

Two shifts stand out in our research: the rise of circularity as an execution requirement and the move from ESG storytelling to factual, operational data.

Circularity Is Becoming Structural, Not Optional

Circular economy principles are no longer confined to sustainability strategies or vendor messaging. Circularity is now one of the most effective levers for reducing IT‑related greenhouse gas emissions, particularly in infrastructure. Recycling, repair, refurbishment, and responsible end‑of‑life management are where the largest gains can be realized.

As a result, technology vendors are being pushed to embed circularity directly into ordering processes, contracts, and warranties. Refurbished infrastructure is no longer positioned as a compromise. Leading suppliers now demonstrate equivalent performance, quality, and warranty conditions compared with new equipment.

This shift has direct implications for enterprise architects. Circularity only scales when it is designed into the architecture. Hardware lifecycles, refresh policies, data center design, and supplier standards all determine whether reuse and refurbishment are practical or theoretical. When circularity sits outside EA governance, it remains aspirational. When it is embedded into architecture standards, it becomes executable.

ESG Transparency Is Shifting From Claims To Facts

At the same time, expectations around ESG transparency are rising sharply. Organizations are under growing pressure to provide quantified, auditable sustainability data, not high‑level commitments or aggregated metrics.

Our research highlights a clear shift toward asset‑, site‑, and project‑level ESG data. Technology vendors are increasingly expected to provide customers with concrete metrics, such as CO₂ emissions avoided, materials reused, and end‑of‑life treatment outcomes, at the level of individual projects and portfolios. This data is reused directly for regulatory reporting, Scope 3 disclosures, and procurement documentation.

ESG credibility now depends on data production, not marketing narratives. And that data does not come from sustainability reports alone. It comes from operational systems that are designed to measure, track, and expose environmental impact.

Why Enterprise Architecture Matters More Than Ever

Enterprise architects sit at the intersection of strategy, technology, and governance. They influence decisions across workplace technology, infrastructure, and software development — the three domains that drive most IT‑related emissions.

Architects also play a critical role in defining what gets measured and how data flows across the organization. Without architectural oversight, ESG data remains fragmented, inconsistent, and difficult to audit. With it, organizations can produce dashboards, roadmaps, and metrics that stand up to regulatory and stakeholder scrutiny.

Sustainability is becoming a design constraint, not an after‑the‑fact outcome. Circularity and ESG transparency now shape architecture decisions in the same way security, scalability, and resilience do. This is what The Enterprise Architect’s Guide To Implementing Environmental Sustainability For IT will demonstrate.