Tech Radar 2026: why Rust and ROS 2 dominate.

A tech radar without ranking criteria is a shopping list. Here's ours for 2026, built from more than 40 engagements delivered over the last twelve months in Paris, Montreal, and Tokyo. Four quadrants, sharp trade-offs, zero hype.

Ranking criteria

A technology enters Adopt if it held in production across at least three different clients, distinct sectors, different teams. Trial: one success in prod, not yet reproduced. Assess: interesting in R&D, not mature for critical prod. Hold: we actively advise against.

Adopt

• Rust for critical backend services where performance and memory safety matter. Axum, Tokio, sqlx. Adopted at two fintechs and one B2B SaaS vendor.
• RAG (Retrieval-Augmented Generation) with small local models for routing and external LLMs for generation. Pinecone or pgvector depending on volume.
• ROS 2 Humble for industrial robotics. Migration from ROS 1 is critical, the support window is closing.
• OpenTofu as a Terraform replacement. Stable license, active community, drop-in replacement.

Trial

• Next 16 Cache Components and the use cache directive. Production-ready since November 2025, 40% TTFB improvement on our first deployments.
• Multi-tool agents with LangGraph or Anthropic Agents SDK. Excellent for complex business workflows, still fragile on cost governance.
• Edge AI on Jetson Orin for on-device inference in robotics and industry. Sub-50ms latency, no cloud dependency.

Assess

• WASM on the backend for isolated plugins (Wasmtime, Spin). Promising for multi-tenant architectures, but the ecosystem is young.
• Managed Vector DBs (Turbopuffer, Qdrant Cloud) as alternatives to Pinecone. More predictable cost model, to be validated at large volume.
• Bun as a production runtime. Very fast, but the npm ecosystem still has rough edges on native libraries.

Hold

• Low-code platforms for core business. Acceptable for internal admin, disastrous once you need to customize or scale.
• B2B crypto-payments as primary rail. Regulatory friction and volatility kill ROI outside niche cases.
• Microservices by default on new projects. A well-built modular monolith costs ten times less to run.
• MongoDB as a disguised relational database. If your data has joins, use Postgres.

The radar is not a dogma

Every line in the radar is a shortcut. Your team context, your legacy, your time-to-market may justify another choice. But if you start a new project in 2026 and pick low-code for your core business, know that in eighteen months you'll be calling us to rewrite it.

Our full radar, segmented by quadrant and use case, is shared in a free consultation with CTOs who book via the Abbeal form. Forty minutes, no pitch, just arbitration.