Compare
Service mesh vs API gateway: which should you pick?
In short
API gateways control north-south traffic; service meshes control east-west.
Short answer
API gateways control north-south traffic; service meshes control east-west.
What's actually different
API gateways (Kong, AWS API Gateway) authenticate, route and rate-limit traffic into the platform. Service meshes (Istio, Linkerd) manage service-to-service traffic with mTLS, retries and observability.
How to choose
Most teams need a gateway first; add a mesh only when east-west complexity earns it.
How Forth helps
Forth Systems works across both Service mesh and API gateway in production. Engagements typically start with a paid, fixed-scope assessment that recommends the right fit for your specific workload, team and regulatory context — not a default answer.
Frequently asked questions
Is Service mesh better than API gateway?
Neither is universally better — the right pick depends on your workload, your team and your constraints. API gateways control north-south traffic; service meshes control east-west.
Can you migrate from Service mesh to API gateway (or back)?
Yes — migrations between Service mesh and API gateway are common and rarely as painful as feared, provided the migration is sliced and ships in measurable increments rather than as a big-bang cutover.
Do you work with both in regulated environments?
Yes — Forth Systems delivers Service mesh and API gateway engagements into FCA-regulated banks, payment institutions and insurers, with output mapped to the relevant control evidence requirements.
How do we choose for our specific case?
Start with a fixed-scope assessment that compares both options against your real workload, team skill, regulatory context and TCO — then decide.
Related
- UAT vs SIT: which should you pick?
- Regression testing vs Smoke testing: which should you pick?
- Manual testing vs Automated testing: which should you pick?
- Load testing vs Stress testing: which should you pick?
- Soak testing vs Load testing: which should you pick?
- Playwright vs Cypress: which should you pick?