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15th September, 2026 National Stock Exchange of India Limited BSE Limited Exchange Plaza, Bandra Kurla Complex, Mumbai P.J. Towers, Dalal Street, Mumbai Kind Attn: Manager, Listing Department Kind Attn: Manager, Listing Department Stock Code - SONATSOFTW Stock Code - 532221 Dear Sirs / Madam, Sub: Press Release We are forwarding herewith a copy of press release dated 15th September, 2026, titled – “Sonata Information Technology Limited Signs Five-Year Strategic Collaboration Agreement with AWS to Accelerate Cloud Modernization in India”. This information will be hosted on the Company’s website at https://www.sonata-software.com/ Kindly take the same on record. Thanking you, Yours sincerely, For Sonata Software Limited Mangal Kulkarni Company Secretary, Compliance Officer and Head Legal Encl.: as above Sonata Software Limited - SSL W: www.sonata-software.com Registered Office: 208, T V Industrial estate, 2nd Floor, S K Ahire Marg, Worli, Mumbai – 400 030 E: info@sonata-software.com Corporate Office: Tower-A, Sonata Towers, Global Village (Sattva Global City), RVCE Post, Kengeri Hobli, T: +91 80 6778 1000 Mysore Road, Bengaluru – 560059, India CIN: L72200MH1994PLC082110 Press Release - FINAL Sonata Information Technology Limited Signs Five-Year Strategic Collaboration Agreement with AWS to Accelerate Cloud Modernization in India Collaboration to expand cloud transformation capabilities and support enterprise modernization across India BENGALURU, INDIA, SEPTEMBER 15, 2026 — Sonata Software [NSE: SONATSOFTW, BSE: 532221] today announced that Sonata Information Technology Limited (SITL), its domestic business, has signed a five-year Strategic Collaboration Agreement (SCA) with Amazon Web Services (AWS) to accelerate cloud adoption and modernization for enterprises across India. The agreement advances Sonata’s hyperscaler-led growth strategy and expands its ability to address cloud transformation opportunities in the Indian market. The companies will pursue a joint go-to-market (GTM) strategy in India to address the growing AI and cloud transformation opportunity. Under the agreement, Sonata will invest in dedicated AWS-focused sales, presales, technical, and delivery capabilities, while expanding joint go-to-market efforts across BFSI, retail, manufacturing, IT, and healthcare industries. The collaboration will also enable Sonata to leverage AWS programs including Migration Acceleration Program and Managed Services Program that support complex cloud transformation initiatives and help customers move from legacy technology environments to modern cloud architectures. These investments are intended to create a more integrated model for identifying opportunities and supporting customers through execution. By bringing together Sonata's modernization engineering capabilities with AWS across key modernization and AI initiatives, the partnership will focus on greater adoption of Amazon Aurora, Amazon Redshift, Amazon Bedrock, Amazon SageMaker, Amazon EC2, Amazon EKS, and AWS Transform. The companies aim to help enterprises improve resilience, increase operational agility, and create scalable foundations for digital and AI-led transformation. The collaboration is also expected to support larger, more complex engagements as organizations in India increase investments in cloud-led modernization. The five-year horizon gives Sonata the ability to deepen its AWS practice, align technical and go-to-market resources around customer priorities, and pursue transformation programs that require sustained execution at scale. As a premier partner of AWS, Sonata’s investments and transformation in building the AWS business has positioned it for exponential growth with this SCA being a core mechanism. Sujit Mohanty, Managing Director and Chief Executive Officer of Sonata Software’s Domestic Business (SITL), said: “This five-year collaboration with AWS represents an important step in advancing our cloud business in India. It will allow us to deepen our AWS capabilities, engage customers earlier in their transformation journeys, and address more strategic opportunities. Our focus is on helping enterprises modernize technology environments in ways that deliver measurable business outcomes.” Praveen Sridhar, Head of Partner and ISV Business, AWS India and South Asia, said: "Enterprises in India are at an inflection point in their cloud journeys — moving beyond initial adoption to modernize critical workloads and build foundations for AI-driven innovation. This collaboration with Sonata brings together deep modernization engineering expertise and AWS cloud services to help customers accelerate these complex transformations. Together, we aim to make it easier for organizations to move from legacy environments to scalable, modern architectures that unlock new business value." About Sonata Information Technology Limited Sonata Information Technology Limited (SITL), a wholly owned domestic subsidiary of Sonata Software, partners with Indian enterprise customers in their digital transformation journeys. As a digital transformation partner, it helps enterprises adopt and scale cloud solutions, fostering innovation and growth. It also helps customers in managing & maintaining their Hybrid Cloud Platforms and related enterprise IT security environments. For more information, please visit https://www.sonata-software.com/ Media Contact: Vinitha Oommen (Vinitha.Oommen@Sonata-Software.com | +91 9886453043)