This article is based on reporting originally published by YourStory.com, covering IMImobile’s cloud communications strategy and AWS infrastructure choices.
Customer Experience as a Competitive Differentiator
Customer experience has become the defining battleground for consumer-facing businesses. According to a Walker report titled Customers 2020: A Progress Report, 86 percent of consumers are willing to pay more for a better customer experience, and by 2020, customer experience was projected to overtake price and product quality as the primary brand differentiator.
Modern consumers expect seamless, digital-first interactions and increasingly prefer messaging channels—WhatsApp, Facebook Messenger, Apple Business Chat, and SMS—over traditional voice or email support. The challenge for established enterprises is that legacy technology infrastructure and fragmented internal systems make it difficult to meet these expectations consistently.
Who Is IMImobile?
Founded in 2000, IMImobile is a global cloud communications software and solutions provider headquartered in London, with offices across multiple continents. The company delivers an integrated suite of platform capabilities and applications designed to help enterprises improve customer experience while reducing operational costs.
IMImobile’s client roster includes organizations such as Hermes, Centrica, AA, O2, EE, BT, Walgreens, Pizza Hut, Vodafone, MTN, Best Buy, Express, three major UK retail banks, and various public-sector bodies worldwide.
IMIconnect: The Enterprise Cloud Communications Platform
IMImobile’s flagship product, IMIconnect, is a multi-tenant cloud communications platform that enables businesses to deliver frictionless customer experiences across more than ten channels, including:
- SMS and Email
- Push notifications and In-app Messaging
- WhatsApp Business
- Apple Business Chat
- RCS (Rich Communication Services)
IMIconnect supports AI-augmented inbound and outbound communications for use cases such as appointment management, complaint handling, consent management, fraud alerts, payment notifications, omnichannel live chat, and order tracking.
Why IMImobile Chose AWS
IMImobile powers mission-critical customer communications and handles billions of business-to-customer interactions every year. This scale created several non-negotiable infrastructure requirements:
- High availability: Ensuring customers and businesses can communicate at all times without service interruption.
- Geographic reach: Expanding product availability across different regions through a single, unified architecture.
- Geo-redundancy and disaster recovery: Meeting strict enterprise SLAs without the cost overhead of separate DR environments.
IMIconnect is deployed across multiple AWS regions, enabling rapid onboarding of customers across the Americas, Europe, MEA, and APAC. A multi-availability zone (multi-AZ) deployment on AWS provides high availability and built-in disaster recovery without requiring a separate DR setup.
“Our choice of cloud services provider was based on the scalability, performance, security and availability requirements of our clients for high volume, mission-critical customer interactions. AWS met our criteria in all these dimensions and their consulting oriented and collaborative approach has reduced the time to market for launching innovative capabilities.”
— Sudarshan Dharmapuri, EVP Products, IMImobile
Key AWS Services in IMImobile’s Architecture
IMImobile makes use of several core AWS services to support scale, elasticity, and data management:
Auto Scaling and Load Balancing
Transaction volumes spike significantly during major shopping events such as Black Friday or seasonal festivals. IMImobile uses AWS Auto Scaling and Elastic Load Balancing (ELB) to handle these peaks automatically without manual intervention, ensuring consistent performance at billions of interactions per year.
Amazon ECS for Container Orchestration
IMIconnect uses Amazon Elastic Container Service (ECS) for elastic scaling of containerized workloads. ECS allows the platform to scale individual services independently in response to real-time demand.
Data Storage and Querying
For storing and querying large volumes of interaction data, IMImobile relies on:
- Amazon S3 — durable object storage for raw data and logs
- Amazon Athena — serverless SQL querying directly against S3 data
- Amazon DynamoDB — low-latency NoSQL storage for high-throughput operational data
Amazon EC2 for Compute
IMIconnect is hosted on Amazon EC2, providing the flexible compute capacity needed to run the platform’s core services. EC2 also enabled IMImobile to assist a telecommunications client with a rapid data migration—completing the process within minutes—following changes required by the EU General Data Protection Regulation (GDPR).
Business Outcomes
After moving to AWS, IMImobile reported improvements across several operational dimensions:
- Cost efficiency: Optimized resource usage through auto-scaling reduces over-provisioning during low-traffic periods.
- Operational simplicity: A multi-AZ architecture eliminates the need to maintain a separate DR environment, reducing management overhead.
- Speed to market: AWS’s collaborative approach and breadth of managed services helped IMImobile accelerate the delivery of new platform capabilities.
- Regulatory agility: Managed compute on EC2 enabled fast data migration for a telecom client responding to GDPR consent-management requirements.
Takeaways for DevOps and Platform Teams
IMImobile’s architecture illustrates several patterns applicable to teams building high-volume, multi-tenant SaaS platforms on AWS:
- Use multi-AZ deployments as the default for any mission-critical workload—they provide high availability and DR without a separate secondary environment.
- Combine ECS with Auto Scaling to handle unpredictable traffic spikes (e.g., retail events) without maintaining permanently over-provisioned capacity.
- Leverage S3 + Athena as a cost-effective alternative to a dedicated data warehouse for querying large, infrequently updated datasets.
- Multi-region deployment supports both data residency compliance and low-latency access for global customers—plan region selection early in your architecture.