Cloud-native SMS platform scalable horizontally and vertically — feature parity with legacy tool plus improved reliability and throughput solution architecture.
Industry
Telecommunications
Services
Technologies
Messaging services provider partnered with Spectrum to address operational and technology gaps in telecommunications. Monolithic SMS stack could not scale campaign peaks. New features required risky full-stack releases. Spectrum applied a phased delivery model — 6 months — aligning stakeholders, compliance needs, and production cadence. Since 2016, Spectrum has delivered similar programs with managed teams and fixed-cost options.
Monolithic SMS stack could not scale campaign peaks. New features required risky full-stack releases.
Monolith could not absorb marketing burst traffic.
Full-stack deploys blocked rapid feature delivery.
Large senders impacted smaller tenants on shared queues.
Customers expected feature parity before cutover.
Marketing bursts were taking down the monolith — and large senders were starving everyone else on shared queues. We split the platform by bounded context and migrated tenant by tenant with dashboards both sides could trust.
Auth, routing, billing, and send workers deploy independently; a billing deploy no longer risks campaign dispatch. Blast radius shrank: an incident in reporting does not take down submission APIs. Teams own services with clear SLAs instead of one shared on-call afraid to restart anything.
Campaign profiles pick worker pools and rate limits — a million-recipient promo scales workers without touching transactional OTP traffic. Dead-letter queues and replay tools let operations recover stuck batches without database surgery. Peak season tests proved headroom before marketing sold the next mega-campaign.
Tenants shifted traffic with side-by-side comparison dashboards: delivery rate, latency, and billing events had to match before cutover. Rollback per tenant remained one flag flip — sales could keep prospects on legacy until parity was proven. Feature parity was contractual; we showed diff reports, not promises.
Peak campaigns
Feature set
Native core
Auth, routing, billing, and send workers deploy independently — campaign autoscaling does not share queues with transactional OTP traffic.
Queue-based workers scale per campaign profile with rate limits and dead-letter replay tools. OTP and marketing traffic use isolated pools so peaks do not starve password resets.
Tenant isolation extends to configuration, metrics, and invoice events. Large senders cannot exhaust shared connection pools for smaller accounts.
Dual-run dashboards compare delivery rate and latency before traffic flips per tenant. Rollback remains a feature flag — sales can hold prospects on legacy until parity is proven.
Spectrum addressed bottlenecks and compliance needs while keeping delivery incremental and measurable.
Delivered and measured in production with stakeholder sign-off.
Delivered and measured in production with stakeholder sign-off.
Delivered and measured in production with stakeholder sign-off.
Campaign peaks run on autoscaling workers with tenant isolation — marketing bursts no longer starve transactional OTP traffic.
Peak throughput headroom
vs. legacy features
Traffic migration
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