App Router expertise with measurable outcomes
Next.js development agency focused on performance, SEO, and conversions
AppSevaa designs and builds Next.js experiences with server components, edge delivery, and structured data baked in. We handle migrations, new builds, and optimization sprints with Core Web Vitals targets and SEO governance built into every release.
Typical post-optimization
Performance-first Next.js builds
We design Next.js applications to excel in Core Web Vitals from day one. Server Components reduce bundle size, streaming renders pixels faster, and edge delivery cuts TTFB. We establish performance budgets and block merges that exceed them.
Image optimization, font loading strategies, and script governance keep pages lean. We measure real-user metrics, not just lab scores, and tune experiences for Indian networks as well as global traffic.
SEO and content architecture
SEO is engineered into the routing and content model. Clean URLs, canonical rules, sitemap automation, robots directives, and structured data are standard. We build internal linking systems and schema patterns that survive algorithm updates and support programmatic SEO.
Marketing teams get CMS workflows with preview environments so they can publish without developer bottlenecks while keeping performance and accessibility guardrails in place.
- Metadata API implementation per route
- OpenGraph, Twitter, and structured data coverage
- Hreflang and canonical management for multi-language sites
- Programmatic SEO templates with ISR or SSR where appropriate
Design systems and accessibility
We implement or extend design systems with reusable, typed components. Accessibility is non-negotiable: keyboard navigation, ARIA landmarks, color contrast, and semantic HTML are built in. Storybook and visual regression tests keep changes safe.
The result is a consistent UI that ships faster and remains maintainable as the product grows.
Migrations with zero SEO regressions
We plan migrations to App Router with careful redirect maps, canonical preservation, and content parity checks. Performance and schema are validated before and after migration to avoid ranking drops.
We use feature flags and canary releases to move sections gradually, monitoring search console, analytics, and Core Web Vitals to catch issues early.
DevOps, security, and observability
CI/CD includes linting, type checks, unit tests, accessibility audits, and performance gates. Deployments are automated to Vercel or AWS with preview environments for every PR.
Security headers, CSP, dependency scanning, and secret management are standardized. Observability covers logs, traces, and synthetic monitoring so incidents are detected before users complain.
Engagement and governance
You work with a principal engineer who owns delivery. We provide sprint demos, release notes, and executive summaries. Risks are tracked with mitigation plans and transparent burn reports.
Engagement models include project-based builds, retained squads, or optimization sprints focused on performance, accessibility, and SEO uplift.
Outcomes we own
Core Web Vitals scores above 90 on primary journeys
Faster time-to-first-byte with edge delivery and caching
SEO stability through migrations and redesigns
Accessible, reusable design system components
Reduced bundle size and improved time-to-interactive
Robust analytics, observability, and release governance
Marketing autonomy with CMS + performance guardrails
Predictable delivery with IST-aligned squads
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About AppSevaa
Team, leadership access, and delivery principles.
FAQ
Do you migrate from Pages Router to App Router?
Yes. We plan phased migrations that protect SEO and revenue. We map routes, canonical rules, and redirects, then gradually move sections to App Router with RSC, streaming, and data fetching improvements while monitoring Core Web Vitals.
How do you guarantee Core Web Vitals?
We set budgets for LCP, FID/INP, CLS, and TTFB, enforce them in CI, and use server components, edge caching, image optimization, and bundle trimming. Real-user monitoring validates performance post-deploy.
Can you work with design systems and headless CMS?
Yes. We integrate with design systems (Storybook, Figma tokens), headless CMS platforms, and commerce backends. Components are typed, accessible, and tree-shakeable to keep bundles light.
What about internationalization and localization?
We set up i18n routing, locale detection, and translated metadata. Content and SEO elements are localized while keeping clean canonical and hreflang tags to avoid duplication issues.
Do you handle hosting and DevOps?
Yes. We deploy on Vercel or AWS with CI/CD, preview environments, observability, and rollback strategies. Security headers, CSP, and dependency scanning are part of the pipeline.
Ready to move forward?
Get a project plan and architecture outline from a principal engineer within one business day.